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Kid Science: Air Resistance Supplies: • Two identical toy cars • Two strips of cardstock or other sturdy paper which are both as wide as the cars and a little bit longer • Tape • Book or board which can serve as a track for both cars at the same time • Stack of books • Blow dryer or fan
Directions:
Community High School of Arts & Academics 302 Campbell Avenue SE Roanoke, VA 24013 info@communityhigh.net (540) 345-1688 www.communityhigh.net 44
Family • August 2020
1. Stack the books and place the board on top such that one end is balancing on the books and the other is on the floor. This should create a ramp or inclined plane. 2. Plug in the blow dryer and place it at the bottom of the ramp. 3. Tape the edge of one of the pieces of cardstock to the front end of one of the cars and bend it over the top so that it creates a curved cover to the car. Secure it with tape
underneath. This car should now have a silhouette or shape that looks like an arch. 4. Tape the other piece of cardstock to the front edge of the other car and bend it into a right angle, securing it to the top of the car. This car should now have a silhouette or shape that looks like a block. 5. Make a prediction, if both cars race down the ramp, which will reach the bottom first? 6. Place both cars at the top of the ramp and let go at the same time. What happened? Did one of the cars reach the bottom first or did they both reach the bottom at the same time? 7. Make another prediction, will the same thing happen if there is air pushing on both of the cars? 8. Turn on the fan or blow dryer and make sure that the air is able to reach both cars at the same time. If you are using a blow dryer and
