Toys and Forces Forces make toys work Forces make toys start moving change direction speed up slow down and stop moving Forces also change the shape of some toys Bouncing toys Floating toys Flying toys Rolling toys Sliding toys Spinning toys None of these toys would work without forces 4
What Is a Force A force is a push or a pull When you push something it moves away from you When you pull something it moves towards you When this girl applies a pushing force to the beach ball it moves away from her When this boy applies a pulling force to the bag of soccer balls it moves towards him 5
How Does a Bouncing Toy Work A bouncing toy works when a pushing or pulling force makes it move The toy moves by bouncing up and down This happens because part of the toy changes shape You bounce when you jump on a jumping castle because a pushing force changes the castle’s shape 6
7 Part of a bouncing toy changes shape when a force acts on it When the force stops the toy changes back to its original shape child jumps downchild moves up child’s feet make jumping castle change shape jumping castle changes back to its original shape pushing force The pushing force of a child bouncing on a jumping castle changes its shape pushing force 12
