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Fed Is A Dead Baboon Baboon (a baboon is a baboon eats dead)

©
text and image, Sandrine New

In South Africa, baboons, like many wild animals are still free to move at will and frequently occur at the edge of - or even on-road. Foreign tourists visiting this beautiful country are excited about the opportunity to see wild animals so close, so they are not even in a nature reserve. Perhaps believing in helping these wild animals to survive, or more likely to take a good photo, it is not uncommon for these visitors "innocent" share some of their meals with the baboons.

But this gesture seemingly innocent and harmless may actually be the point from big, big problems. So why anyone (foreign or South African) should never feed a baboon (and by extension any wild animal in any country)?

1. First, feed the baboons is illegal, as recalled the many signs along the roads. Ignoring them can get you in trouble with the law and expose you to pay a fine salt. But the first reason is, in my opinion, the least important of all.

2. In reality, this is not helping wildlife that feed them. Indeed, it is a way of making them dependent on humans for survival. In a country like Kenya tourism, baboons have learned to expect treats tourists along the roads linking the airport to hotels. Although it may seem hard (I also love animals), if an animal can not survive without your help, it probably is not supposed to survive ...

3. Not only the baboons are wild animals, and devrainet be respected as such (any wild animal is potentially dangerous), but they can be big, strong and aggressive. A male baboon can weigh 40kg, her teeth are longer than those of a leopard, and he will not hesitate to use them, especially if he feels - and feels that her troupe - in danger. In addition, there is rarely an isolated baboon, the large dominant male mentioned above may very well have a whole troop support.
By feeding baboons, you put yourself in danger, and you put people in your group in danger.

4. The baboons that are fed by humans are no longer afraid of them. They venture ever closer to homes and cars in search of food, and do not hesitate to enter: some months ago, two large baboons entered by breaking the roof of a house in Constancia, and Cape Point where the baboons have become a scourge and a danger, they open the doors cars and go, even when there are passengers inside. Baboons feed back to create a problem in the long term future for tourists and locals.

5. Most South Africans have little regard for these wonderful and very intelligent monkeys that are baboons, and do not hesitate to shoot them on sight when they come too close to their property when they do not poison not. By that baboons regard humans as providers of food, you do not help either baboons. Their reputation and their conflicting relationships with humans, can only deteriorate further, and turn the most often to the disadvantage of the baboon.

Here's how the simple gesture, and may be perfectly innocent, give a cookie or an apple to a baboon, leading to another takes such proportions that resulted in the death of baboons: "A Fed Baboon Is A Dead Baboon "(" A baboon is a baboon fed dead ").

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travel the streets of Fes el-Jadid

walk through the streets of Fez El -jadid
After enjoy a memorable tour in the Medina (Fes el Bali) you may continue your stay in Fez Jdid.
To find the good places and good places in the new town you can take the bus when a little taxi , you might as it use a ... ..
New Town Fez: as its implies, is a new city to the European (Modern). The main avenue
Fez JDID are: Av Hassan II - Bd Mohamed V. always lively, especially at night. One can also admire the splendid buildings found in these two avenues, as well as luxury boutiques
department stores ... etc..
- Places visited in Fes Jdid
Bab Sammarine: it is the main entrance of Fes Jdid. Bab Sammarine was built by Sultan Yacoub Yousef Abu Marinid. His former name was Bab-Ouyoune Sanhaja.
Grande Rue de Fes El Jadid: it is a main road that links Bab Dekkakine. It is a great commercial location where many shops. In the middle of the main street you can admire two ancient mosques built in the XIV century: Hamra Mosque and the mosque Baida. At the beginning of the covered part of this amazing street.
Makina: it is an arms factory. It was built by the great Sultan Moulay Hassan I Alawite the nineteenth century.

Today, there are a fabrication shop in Tampa. The
-around Fez
Moulay Yaccob: Spa, located 22 km west of Fez. Moulay Yacoub, is the name of a source of sulfur water, sulfur formed calcium chloride, sodium and active radio. This water is hyperthermal indicated for skin diseases, and also turn train Rheumatism. Sidi
Harazem spa known since the twelfth century at 12 km, about Fès.elle is on the main road of Taza - Oujda Harazem Sidi is a natural mineral water, with chloride, sodium bicarbonate, calcium and magnesium. It is indicated for diseases of the kidneys and urinary tract.

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Build your own weather station: wind

© Sandrine New


To study the weather, meteorologists record and analyze data. It is possible to become an amateur meteorologist without spending a fortune on measuring instruments in constructing its own weather station and taking note of his actions.

This series of articles showing how to build some instruments for measuring weather station. While not extremely accurate, of course, these instruments may nevertheless be used to measure weather conditions and to provide time to come.

Most instruments are simple enough to be built with children - sometimes with a little help - for a project to do at home or at school.

This article speaks of instruments used to measure wind force.



1) Hear the Wind (Build wind chimes)

A wind chime is not, Strictly speaking, an instrument used by a weather station because it does not measure anything. It is, after all, a nice way to hear the wind blow. It gives also an indication of the wind and can help predict a storm approaching, for example. In addition, building a wind chime is a simple project that can be undertaken even with very young children.

must:

- Various metal objects (nuts, washers, screws, nails, lids of jam ...). Alternatively, it is possible to use shells or pieces of bamboo of different lengths
- fishing wire from different lengths (approximately 25-28 cm)
-
scissors - a long straight stick (tree branch, joystick ...)


Instructions:

1. Hang a piece of fishing line to each object.

2. Hook the other end of each wire fishing long pole so that the objects hang freely, with 1 or 2 cm from each other.

3. Attach two extra pieces of fishing wire at the ends of the stick, and used to hang the wind chime, horizontally, from the branch of a tree. In the absence of tree it is possible to make a stand by planting two sticks vertically in the ground and attaching the stick.

Explanation:

When the wind blows, it moves the objects collide. Through their music, you hear the wind blow.


2) Estimate the Wind Speed and Direction Finding (Building a windsock)

The sock helps determine wind direction and also gives an indication of its speed. Ventilators are commonly used at smaller airports and along highways.

must:

- 1 small piece of cloth measuring approximately 1m x 1m, if possible with broadband
-
scissors - a needle and thread
- 1
curtain ring - a metal coat hanger (or lack of wire and an extra ring)
- thick cardboard
- 1 permanent marker
- 1 joystick
- bugs
- 1 stick light of about 60-70cm, as used in gardening
- tape
- a strong cord
- 1
compass - clips

Instructions:

1. Cut the fabric into a cone shape, and sew together the two straight sides. If the fabric is scratched, try to keep the strips perpendicular to the straight sides.

2. Bend the hanger into a circle. Y slip ring curtain. Bend the hook of the hanger to form a small ring.

3. Place the circle formed by the metal hanger on the great ouveeture of the fabric and sew it on. Be careful to place the curtain ring opposite to the ring formed by the hook of the hanger, and to provide an opening.

4. Cut a circle of 30 cm diameter hole in the cardboard. Make two small slits perpendicular at its center. Write "N", "E", "S" and "O" on the edges of the circle at regular intervals.

5. Slide the stick into the slots of the circle and set it on the stick with the bugs.

6. Drag the small stick through the curtain ring and the ring formed by the hook of the hanger. The tape of these two rings so that no more than one side.

7. Hang the small piece of stick over the long broom handle with a string. The windsock should be located above the joystick.

8. Place the sock in a windy area. The joystick can be pressed into the ground, but the air intake will work better if it is placed above example, if the joystick is hooked to a fence.

Explanation:

The wind enters the air intake by high opening, which is located near the joystick, and the windsock stands in the opposite direction to where the wind comes.
A windsock is conventionally composed of five alternating bands of red and white. Each band, when raised by wind, corresponds to about 5 knots - about 9 km / h -. The windsock is thus horizontal when the wind bent to a minimum of 25 knots - 45 km / h.
If the windsock is made of wide strips, it is possible to note how many of them are drawn up by the wind. It will not make an accurate estimate of wind speed, but it can help to record and compare measurements.


3) Determine Wind Speed (Building an Anemometer)

Model A:

must:

- a plastic bottle and cap
- 1 large straw
right - a large pearl
- 1 skewer Wood
- 3 toothpicks
- 2 corks
- sand
- 3 paper cups or yoghurt pots
- 1 knife

Instructions:

1. Cut a cork in three rounds and paste these in the paper cups.

2. Planting a toothpick in each slice, on their side.

3. Planting the skewer into the second stopper cork. It does not show the other side.

4. Planting the free part of the toothpick into the second stopper on the side at regular intervals.

5. Orient glass so they do all facing the same direction in the direction of clockwise or clockwise.

6. Make a hole in the cap of the bottle, large enough to slip the straw. Fill the bottle with sand and screw cap.

7. Planting the straw in the plug hole and into the sand.

8. Skip the skewer in the pearl and straw. If the skewer is longer than the straw shorter.

Explanation:

higher the wind is stronger, the anemometer spins. It is possible to count and record the number of turns Q'una glass done in a minute.


Model B:

must:

- 5 paper cups
- 2 straws straight
- 1 bug
-
scissors - a paper punch
- a stapler (or strong adhesive paper)
- a sharp pencil with an eraser

Instructions:

1. With a punch, make a hole in 4 of the lenses, about 1 cm from the edge.

2. In the fifth glass, punch 4 holes evenly distributed about 1 / 2 inch of edge. Then a fifth hole at the center of the bottom of that glass.

3. For 2 of 4 glasses, run a straw through the hole, fold the end of the straw and staple it to the side opposite the hole (you can also tape).

4. Slide a straw assembly / glass in the two opposite holes in the glass with 4 holes. Another glass slide with a single hole on the free end of the straw. Attach the straw to drink as before, making sure that the glass is rotated in the opposite direction to the first drink. Do the same with the other two glasses.

5. Arrange 4 cups so they are all in the same direction (clockwise clockwise or counterclockwise) relative to the central glass.

6. Plant bugs in the two straws, to where they intersect. Slide the pencil eraser top part, through the hole in the bottom of the glass center, and plant bugs in the gum at the bottom.

7. Place the anemometer in a location protected from wind. It is possible to make him a foot by filling a bottle with sand, making a hole in his cap, and sliding the pencil into the bottle through the hole.

Explanation:

The anemometer rotates with the wind, the more it goes, the faster the wind blows hard.
It is possible to simply count and record the number of rpm that makes the instrument - it helps to have a glass painted another color -. To calculate the approximate speed of rotation, must:
- Count the number of revolutions per minute (RPM).
- Calculate the circumference (in meters) of the circle made by the rotating paper cups.
- Increase RPM by the circumference of the circle.

The speed of the anemometer is however not the same as the wind speed.


Sources:

http://www.fi.edu/weather/todo/todo.html
M ake Y o O wn W eather S Tatio No

http://www.miamisci.org/hurricane/weathertools.html Weather
tools

http://ecolecentreferte.free.fr/projet-meteo/Le-projet-meteo.htm

http:// fr.wikipedia.org / wiki /% C3% Manche_ A0_air

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Circuit al'ancienne Fez (Fes El-Bali / Medina Kadima)

On horseback or on foot, you can discover the important monuments of Fes el Bali. Circuit al'ancienne Medina "Fes el Bali"
The visitor of the ancient city surrenders to the miracle of the return in time:

Bab Boujloud : it allows the main access to Fez el Bali . It was built in 1913. Its walls are lined with blue ceramic on one side and green on the other side.

Borj Nord : fortress built in the 15th century by Sultan Mansur Saadi Eddahbi. hosts an extraordinary collection of weapons, from prehistory to the present. This bourj offers a general view of Fez.

Dar Batha : it was built by Sultan Moulay El Hassan 1 and Moulay Abdelaziz, in the nineteenth century. This palace has been transformed into a Museum of Arts Moroccans (it contains wonderful collections of Embroidery of Fez, Carpet ... etc..

El Harrarine : on the other side of Zaouïa Moulay Idriss II, is El-Harrarine small souk where we sell different kinds of silk son.

Fondouk Isstaouinien : it is a hotel for people of Tetouan, the fondouk once served, a Hotel exclusively for traders who come to Fez to Tetouan. It was built in the 14th century.

The Dars Debbagh (Tanners) : Tannery of Fes is marked by diversity of Tannery airy place that Medina and the best known are: Dar Debbagh, Chouara (Ward Blida), and Dar Debbagh of Sidi-Moussa
illustration was the large Plant modern tannery in Fez Sidi Brahim who is on the road Sefrou , must still mention the institutes tannery located in Dar Mehraz next to the great university in Fez.

Madrasa Bou-Inania : Completed by Sultan Abu Inan Marinid in 1357, Bou-Inania madrasah is the largest Medersas of Fez, known by its curious mechanical clock made of wood carvings. It was built by the philosopher and astronomer Abu Hassan Ahmed Atilimsani, known as Ibn Al Fahham.

Medersa Misbahia : it was completed by Sultan Marinid Abu El-Hassan 1346.elle has three floors, plus a prayer room upstairs.

Medersa Seffarine : built by Sultan Abu Youssef's former name was Holf OUIJNE Madrasa Madrasa is the first built in Fes. We can go through the neighborhood or is Seffarine Medersa Seffarine without noticing and admiring the various shops of silver goods: plates - dishes - serve coffee or tea candles biblots ... make money and carved from a way harmonious and delicate. On the other side
curious and large pots for rent attract the gaze of passers-by, it is tanjia of different sizes, some of which reach a ton or more, and are used to prepare large amounts of cow meat in particular, preserved, salted and tasteful.

Mosque El Quaraouiyine : this is the first university in the world even before OXFORD and SORBONNE Quaraouiyine mosque was founded by Fatima Al-Oum El Banine Fihria, in 857, a century after its founding , Sultan Ali Ben Youssef Almoravid in 1134 it gave its final dimensions. It is considered one of the largest mosques in the world.
Andalusian Mosque: It was founded by Al Meriem Fihria sister Fatima in the ninth century.

Souk Henne : in this small market, there are different kinds of natural dyes used makeup. The Henna is a plant dry, women reduce it to powder and mix it with water in order to have a red dye used to tint their hands, feet and hair.

Zaouite Moulay Idriss : it is an admirable mausoleum housing the tomb of Moulay Idriss II, founder of Fez at the mausoleum entrance is reserved for Muslims, but Muslims can not see through the main door, the room prayer with its many clocks, and the tomb of Moulay Idriss.

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Stay in Fez: Brief history of Fez Morocco

- Fez is one of the cities "flagship" of North Africa .
Fez is one of the oldest cities in Morocco. IDRISS I was the first founder of this city that would become its capital.
In 789, he built the city of Andalusia. (Area Andalusian today). His son Idriss II took the city of Andalusia as its capital, but in 808, he added two cities, one on the right bank, giving it the name of ADWAT Andalusian, and one on the left bank of ADWAT Kairaouani.

Later, thousands of Arabs driven by the Sultan of Cordoba in Andalusia, settled in the city of ADWAT of Andalusia.
In 1069, Fez was taken by the Almoravids. YOUSSEF BEN Tachfine was very interested in Fez, he demolished the walls that separated the two cities , built from the Kasbah filali Boujloud. His son BEN ALI Youssouf, took over the extension of the Karawiyin in 1135. Despite the distance between
Fes and Marrakech (Marrakech was their view that large capital), Almohades all took care of Fez. There is, of famous mosques, shrines or at the time. Industries also develop. Almohades then made of Fez one of the most modern cities at that time.

During Marinid dynasty in 1248, Fez has had another very important change, not only religiously, but also administratively. It became the capital of the sultans Merinids. It was then that some of Fez Fes El Jadid named, was built and the present royal palace, and many Medersas: Seffarine , Attarine Mesbahia ... etc.. Similarly
sultans Saadian whose capital was Marrakech at the time, were interested in Fez also of great works were carried out by Sultan Saadian MANSOUR AHMED EL (1578/1603), who built the Borj Nord which now houses a museum of weapons. He added two flags in the courtyard of the Karawiyin.
Finally, during the reign of the dynasty of Alawites and after the death of his Alawite Sultan Moulay Rachid, brother Moulay Ismail Meknes decided to make his capital. Despite this decision, Fez reached at that time the peak of its splendor. Thus, Moulay Hassan I built a famous Arsenal "the MAKINA.
Today, under the reign of the great builder of the new Morocco his majesty the king Mohammed VI , Fez continues to grow in the Domini Social Policy and Tourism. She saw a new era.

Several improvements have been made in Fes as well many local cultural events, are organized and international.
Just as Venice or the Mont Saint-Michel, Fez el Bali offers visitors the beauty of its madrassas, and mosques, the industrious activity of its streets, the shops are full of.
In surrendering to the rhythm of his footsteps, visitors to the miracle s'abondonne back in time to Medersa Attarine so richly decorated, the Medersas Seffarine on the place of coppersmiths, mosque Karaouiyne, via Nejjarine place, and all decorated so pretty fountain mosaic (Zelliges ) and the Zaouïa Moulay Idriss, which contains the tomb of Idris II, the visitor will do wonders in that wonderment. All
Morocco millennium craftsman in the souks, tanners, dyers and spiritual in its madrasas and mosques, is there before his eyes.

Around the city of Fez:
The region is green and offers visitors many attractions: the hot springs Sidi Hrazaem , and Moulay Yacoub, the ski resort of Ifrane, the picturesque town of Berber Sefrou celebrating all year's harvest his cherries, the craft center of Azrou where you can see the manufacture of precious carpets of the Middle Atlas

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Build your own weather station: wind direction

© Sandrine New

To study the weather, meteorologists record and analyze data. It is possible to become an amateur meteorologist without spending a fortune on measuring instruments in constructing its own weather station and taking note of his actions.

This series of articles showing how to build some instruments for measuring weather station. While not extremely accurate, of course, these instruments may nevertheless be used to measure weather conditions and to provide time to come.

Most instruments are simple enough to be built with children - sometimes with a little help - for a project to do at home or at school.

This article speaks of instruments used to measure wind direction.


1) Find Wind Direction (Building a Weathervane)

Every station has a weather vane, or indicator of wind direction. The wind vane is pointing in the direction from which the wind.

Model A:

must:

- 2 long wooden skewers or metal
- 1 large straw (drinking)
right - a plastic bottle with a lid
- 1 large pearl
- sand
- cardboard
- Dezs
scissors - plastic tape to cover the books

Instructions:

1. Draw the tail of the arrow of the weathervane on the board - this can be a simple rectangle-. Give them double the size of the arrow over, because it will be folded in half from behind. The cut and fold in half.

2. Place the blunt with a skewer in the tail folded and paste two pieces of cardboard over the tail.

3. Make a hole in the straw near one end. Y insert the skewer with the tail vane, placing its tail vertically.

4. Cut a diamond in the box to the head of the arrow (twice the final size). Make a hole in the middle and insert the skewer - with the tail and straw - through.

5. Fold the diamond in half - it must have looked like a triangle) and glue the two pieces together on the skewer. The head of the arrow should be level. Por
more impervious to the weather vane, the parties may be cardboard covered with plastic adhesive to cover the books.

6. Cut a circle in the cardboard about 10 cm in diameter. Write "N", "E", "S" and "O" on board at regular intervals. Draw a small cross in the center of the circle and split it with scissors. Push the skewer in the second slot of the double cross.

7. Make a hole in the lid of the bottle. Y push the skewer in the circle. Insert the bead on the skewer, above the circle.

8. Insert the second skewer through the straw.

9. Fill the bottle with sand and straw to slide. Screw cap.

10. Guide vane with a compass.


Model B:

must:

- a long wooden stick measuring approximately 1m long (eg. A broomstick)
- an aluminum support for quiche or cake (otherwise, use cardboard and plastic adhesive to cover books)
- a wooden board about 30 cm long (eg a wooden ruler)
-
nails - 1 metal washer
- 1 hammer
- glue
- 1 small saw ( or a serrated knife)
- scissors (cutting from aluminum)

Instructions:

1. With the small saw (or knife) to make a vertical cut - about 1 cm deep - at each end Rule or wooden board.

2. Drive a nail through the middle of the board. The triturate until the board can rotate freely around.

3. Cut a figure into two pieces like an arrow head and a tail (or another figure, as long as the lead element is bigger than the tail) in the aluminum container. Paste an item from each of the notches of the board. Let dry.
the absence of aluminum, it is possible to use cardboard to protect from the elements by covering it with plastic tape.

4. Place the metal washer on a stick and plant a nail through the hole in the vane - through the washer - and the stick. The vane must rotate freely and easily around the nail.

(between the vane and the stick, it is possible to add a cross made of two pieces of wood dishes pointing in the direction of the four cardinal points. The proper orientation using a compass).

5. Place the vane on the outside, for example by holding onto a fence with wire. Place it as high above the fence as possible, while the hanging securely.


Explanation:

head - or larger element - from the vane tip always in the direction from which the wind blows. For example, if the weather vane indicates the South, then the wind comes from the South - and do not breath to the south, as is often believed-. The head
- Gold Of The Biggest element-pointing Will Always To The Point


2) Find the Wind Direction (Build banners)

Instead of a weathervane, banners can be used to find the direction of wind.

must:

- 1 paper plate
- 1
permanent marker - scissors
-
crepe paper - pencils
- tape

Instructions:

1. Draw a large cross through the center of the plate, on its reverse.

2. Cut a square with sides of 2.5 cm to 1.5 cm from the edge at each end of the cross.

3. Cut out 8 streamers of crepe paper measuring 1 meter long each.

4. Braid the two by two banners, and hang the end of one of four pairs in each of the holes in the plate.

5. Write "N", "E", "S", "O" around each hole.

6. Keep your banners before you, the plate parallel to the ground with the thumb on top, near the letter "S", and the outstretched arm.

7. Use a compass to point "N" of the plate in the direction of North.


Explanation:

The direction in which the crepe paper flies indicates wind direction: if the banners are flying westward, while the wind from the east.



3) Find the cardinal points (Build your own Compass)

To know where the wind comes at a time, it is nécessiare have a compass. Instead of buying one, it is easy to manufacture his own.

must:

- a straight stick measuring about 45 cm
- 4 stones (pebbles)
heavy - some smaller stones
- a flat spot in the sun
- 1 string

1. Dig a hole 15 cm in the soil and bury the bottom of the stick.

2. In the morning, place a small stone at the end of the shadow of the stick. Hang a piece of string to the stick and use the string to draw a circle on the ground whose radius is the distance between the stick and the small stone marker.

3. In the afternoon, when the shadow has the same length as the morning - or when it touches the circle on the ground - but a different direction, placing a new small stone marker.
Shadow of the morning and the afternoon meet at the place where the stick is planted to form an arrow pointing south (or north in the southern hemisphere).

4. Place a two 4 large stones on the ground about 30 cm of the stick in the direction where the South has been found. The North is in the opposite direction, aligned with the Southern rock and stick. East and West, located midway between North and South, are opposed.


Sources:

http://www.fi.edu/weather/todo/todo.html
M ake Y o O wn W eather S tation

http://www.miamisci.org/hurricane/weathertools .
Weather html tools

http://www.meteorologic.net/construire-sa-station-meteo.php

http://ecolecentreferte.free.fr/projet-meteo/Le-projet-meteo.htm

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Build your own weather station: Humidity

© Sandrine New

To study the weather, meteorologists record and analyze data. It is possible to become an amateur meteorologist without spending a fortune on measuring instruments in constructing its own weather station and taking note of his actions.

This series of articles showing how to build some instruments for measuring weather station. While not extremely accurate, of course, these instruments may nevertheless be used to measure weather conditions and allow time to come.

Most instruments are simple enough to be built with children - sometimes with a little help - for a project to do at home or at school.

This article speaks of instruments used to measure humidity.

The humidity is measured in percentage. Air that has a 100% humidity is extremely wet.

The instruments used to measure the humidity must be placed outside in a sheltered location - such as in a weather tight box.
Hygrometers and psychrometers can
used to measure moisture in the air. Here's how to make them.

Model A: Make a Hygrometer

must:

- 2 nails
- 1 button
- a wooden plank
- an empty thread spool
- 2 sheets of paper
- cardboard thin
- 1
long hair - the glue
- 1 hammer
- scissors

Instructions:

1. A nail at the top of the board, in the middle.

2. Draw an arrow in the box and cut.

3. Draw a cloud and a sun on a sheet of paper and cut them out.

4. Draw a half circle using an entire sheet of paper, cut and paste on the board, towards the middle.

5. Wrap the hair around the coil in the opposite direction of clockwise. Hook one end of the hair to the nail at the top of the board.

6. Glue the middle of the arrow on one side of the coil. Planting the second nail in the center of the arrow and in the coil.

7. Planting this nail down the half-circle in the center. The arrow should be level.

8. Hang a button to the free end of the hair. Button hangs under the coil.

9. Paste the cloud to the left, and the sun right on the board.

Explanation:

When the humidity increases, the hair gets longer, rotating the spool counterclockwise in the world. The arrow turns left and points to the cloud. When the humidity of the air decreases, the shorter hair, turning the spool in the direction of clockwise. The arrow turns to the right and points to the sun.


Model B: Make a Hygrometer

must:

- a wooden board or a flat piece of polystyrene (about 22 cm x 10 cm)
- a flat piece of plastic (about 8 cm x 8 cm)
- 2
nails short - 3 long hair or human hair of horses (About 20 cm long)
- a coin
- glue
- tape
- a hammer
- scissors (strong enough to cut plastic)

Instructions:

1. Make it point by cutting the piece of plastic shaped like a triangle: take one side of the plastic as a base and draw two lines from the corners of the base, until the middle of opposite side. Cut along these lines.

2. Draw a line on the pointer that links the pointed end in the middle of the base.

3. Tape the piece on the pointer near the pointed end on the line.

4. One plant nails in the triangle near the base line. Enlarge the hole by grinding the nail. The pointer should move freely and loosely around the nail.

5. Glue the hair (or hair) to plastic, between the part and the nail hole on the line.

6. Draw a vertical line on the plate (or Styrofoam) in the middle along the length.

7. Place the cursor horizontally on the board about 3 / 4 distance from the top.

8. Drive a nail through the hole in the pointer, and the board. The hair must be pasted on the line of the board. The pointer should turn easily around the nail.

9. Planting another nail in the plate, about 2 cm from the top, also on the line.

10. Reaching the hair so that the pointer points to the horizontal - the line on the pointer must be horizontally. Doicent hair was perfectly vertical line along the base. Paste extémité hair to the nail on the board. Necessary, shortening the hair.

Explanation:

cells of human hair - and animals - indicate the amount of moisture in the air, stretching and contracting. When the air is moist, the hair stretches and the pointer point down. When the air is dry, the hair is shorter, and the pointer points above. Draw marks on the basis of the hygrometer to compare the different levels of moisture indicated by the pointer.


Model C: Building a Psychrometer

The humidity is measured sometimes with a psychrometer, which is an instrument consisting of two thermometers, one dry with a ball, the other with a wet ball.

must:

- 2 thermometers graduated about 0 ° C to 35 ° C
- cotton
- 2 elastic
- string
-
a small bowl - Water

Instructions:

1. Wrap the balls of the two thermometers the same amount of cotton held by a rubber band.

2. Tie a string to the other end of the two thermometers and hang out in the shade.

3. Place a bowl of water under one of the thermometers, so that his ball soaked in water.

4. Wait 30 minutes and compare the temperatures indicated by the two thermometers. Calculate the difference between the two temperatures and use the chart below to estimate the amount of moisture in the air.

The numbers in the middle indicates the humidity in%



Dry bulb temp difference between c thermometers

T ° c 1 c 2 c 3 c 4 c 5 c 6 ° c 7 ° c 8 ° c 9 ° c 10 ° c
(2 f) (4 ° f) (6 ° f) (8 ° f) (10 ° f) (12) (14) (16 ° f) (18) (20 ° f)

10-14 ° c 85 75 60 50 40 30 15 5 0 0
(50-58 ° F)

15-19 ° c 90 80 65 60 50 40 30 20 10 5
(59-67 ° F)

20-25 ° c 90 80 70 65 55 45 40 30 25 20
(68-77 ° F)


Sources:

http://www.fi.edu/weather/todo/todo.html
M ake Y o O wn W eather S tation

http://www. meteorologic.net / construct-sa-station meteo.php

http://ecolecentreferte.free.fr/projet-meteo/Le-projet-meteo.htm