Step 1:
Make the jet by putting the long end of a flexible straw into the balloon.
What you need:
Balloon
Flexible straws (3)
Tape
Water bottle
Bottle caps (4)
Sponge
Scissors
Barbecue skewers or chopsticks (2)
Step 1:
Make the jet by putting the long end of a flexible straw into the balloon.
Step 2:
Use tape to secure the straw and the balloon and to make sure no air will escape.
Lay the water bottle down. With scissors, poke two holes in the bottle. The holes should be directly across from each other on the part of the bottle that will be the back of the car.
Step 4:
Slide a straw through the two holes. This is the axle. Adjust the axle so it goes straight across.
Step 5:
Repeat steps 3 and 4 at the top of the bottle, which will be the front of the car.
Step 7:
Cut your sponge into squares that will fit into the bottle caps. Then wedge a square of sponge into each bottle cap to make the wheels.
Step 8:
Use a spare skewer to poke holes into the center of each sponge.
Step 10:
Use scissors to poke two more holes. One toward the top of the bottle, and one on the bottom of the bottle.
Step 11:
Push the jet into place so that the straw’s balloon end pokes out the hole toward the top and the open end pokes out the bottom.
Blow up the balloon by blowing through the straw, then quickly put your finger over the end of the straw to stop air from escaping.
Step 13:
Put the car on a smooth surface.
Step 14:
Let go!
