Learning with Experiments
Would you like to measure the speed of the wind? You can make an anemometer. Here's how.
You'll need: 4 paper cups, drawing pin, tape, pin, pen tube, two pieces of wood, wire, shoebox, cotton, clay, thumb tacks
Twist a loop at the end of a length of stiff wire. File the opposite end flat. Tape the loop to the bottom of the shoebox. Put a few stones in the bottom of the box and place lid on it. Make a hole for the wire.
Tape two pieces of wood into an X. Push the 4 paper cups onto the ends of the wood, facing in a circle. Securely fix the center of the X to the end of an empty ball point pen tube with a tack. Put a piece of tape over it. Push a pin through the small hole in the side of the tube. Place it on the wire straight up, so it turns easily on the pin.
Tie a piece of thread to the pin inside of the tube. Putting it sideways over a roller. The center of a kitchen roll will be fine. Let it hang down at the side of the object. Prepare a small molding clay weight at the end of the string. Let the cups go, and they should spin around in the wind. Use a clock to time how long the clay weight takes to rise from the floor to the edge of the object.
Continue your experiment morning, afternoon, and night, in a windy place for a few days for to measure different kinds of winds.
Would you like to make a water tornado? It's easy, here's how
You'll need: 2 large plastic bottles, a hammer, a nail, food coloring
Cut
off the top of one plastic bottle. Make a hole in the other bottle top
with the hammer and nail.
Half fill the bottle with water and a few drops of food coloring. Put your finger over the hole in the bottle, and turn the bottle up-side down. Turn the bottle around, place it over the other bottle, and the water will be swirling.
Now remove your finger. Can you see a vortex? The water should form a funnel shape as it flows out.
Title Page/ Storms/ Hurricanes by Other Names/Famous Storms/ Predicting Storms/Staying Safe/ Fun Stuff/ Our Stories/ Bibliography/Guest Book