1# Rain Gauge

Supplies:

-Permanent Marker

-Ruler (with standard and metric)

-Clear Plastic Medicine bottle or beaker

Instructions:

First, take the clear plastic container and put it next to the ruler. Next, carefully mark of inches on the bottle with the permanent marker. Repeat this process on the other side of the container with centimeters. Finally, set rain gauge outside in the rain and watch it fill up. Later go outside and find out how much it rained.

By Terence Crofts

2# Balloon Barometer

Supplies:

-Rubber balloon

-20 oz soda bottle

-Masking tape

Instructions:

First, stretch the rubber balloon across the opening of the 20 oz soda bottle, make sure you do this inside (it does not matter if the balloon is on the inside or outside of the bottle). Second, put the tape around the tip of the bottle so you make a firm seal. You should put it anywhere where you want to measure the air pressure.

Balloon inside bottle:

Shrunk = Low pressure

Expanded = High pressure

Balloon outside bottle: Other way around.

By David Grayson

3# Wind Spinner

Supplies:

-Nail

-String

-Ruler

-Permanent Marker

-Scissors

-2 Liter Soda Bottle

-Masking tape

Instructions:

First, take the 2 liter soda bottle. Use the ruler and permanent marker to make two long lines, about an inch apart from each other, running vertically up the soda bottle. Then make four lines in between the two vertical lines. Next, cut along every other horizontal line to make flaps, do this four times on every side of the soda bottle. Finally, using the nail and hammer, carefully punch a hole in the center of the bottle cap. Then cut about three feet of string and stick it through the hole in the bottle cap and tape one end, then screw the cap back on. Now you are done, so stick it out the window, the faster the wind spinner spins, the stronger the wind is.

By Terence Crofts

4# Vague Thermometer

Supplies:

-Paper

-Disposable cup

-Pencil

-Tape

-Rubber band

-Gum wrapper

Instructions:

First, tape the disposable cup to the left side of the paper. Tape a bubble gum wrapper on the right side of the cup so that the edges are vertical and the metal side of the wrapper is facing you and the paper side is facing away from you. Write "Warm" in the upper right corner of the paper and "Cold" in the lower right corner. You can use the rubber band to attach the wrapper more securely to the cup. If the wrapper points to "Warm" it is warm and if it points to "Cold" it is cold.

By David Grayson