Simple Kids Crafts is a video blog dedicated to reviving the old art of handicrafts for people of all ages. How do oil spills affect aquatic plants? A Miniature Solar Panel Fire Water Balloon Make Clouds in a Bottle Secret Messages Make a Rocket Make a Hovercraft Make an Anemometer Make a Sundial Make a Radio Make an Electroscope Make a Stethoscope Make a Telescope Make a Periscope Make a Camera Bending a stream of water with a comb Lighting a bulb without electricity Simple Motor Cotton Ball Rocks? Salt-Absorbing Art and Science Color Changing Glue Art Baking Soda Clay Oil Sun Catcher Grow a Pineapple Plant! Bead Bowls Wow, what an Air-Gun Funny Diver ! Water boils without fire Ice with Boiling Water Water that boils instantly Water boils in a Paper Pot Soap-driven Boat Pulse Moves Pin Pretty Garden—without Plants Picture made by Fire Magic Pictures Dancing Doll Smoke Goes Down The Dancing Coupl The Umbrella Dance Magic Butterfly Colorful
Stating the Problem - The Big Question What kind of simple machine is your forearm? Materials Plastic Bucket with a Handle Planning the Procedure 1. Place your elbow on a table so that your forearm lies flat and your hand extends straight out over the table's edge. The palm of your hand should be face up. 2. Place the handle of the bucket in the hand of your extended arm. 3. Lift your forearm, but do not raise your elbow from the table. Results As the height of your forearm above the table increases, the height of the bucket also increases. This project is Tom Janice VanCleave's book, Guide to the Best Science Fair Projects, New York, Jossey-Bass Publisher, A Wiley Imprint, 1997. The Guide is available on line at: SchooDoodle.com Why? A lever is a simple machine, consisting of a rigid bar and a fixed point of rotation called a fulcrum, that is used to life or movethings. In a third-class lever, such as your forearm, the effort force (