A book sits still on a table. What can you say about the forces on it?

A soccer ball rolls faster after a kick. What happened to the forces on it?

A spinning top slows down and stops. What caused the change in its motion?

A ball thrown straight up slows down and falls back. What causes it to fall back toward Earth?

A hockey puck slides across smooth ice at the same speed in a straight line. The forces on the puck are ___.

Two children push a cart from opposite sides. The child on the left pushes harder than the child on the right. What happens to the cart?

A swing is pulled back and let go. It swings forward, then back, then forward again. Where will it go next?

A magnet is held near a steel paper clip. What will the paper clip do?

Two magnets push away from each other when placed end to end. What must be true?

A magnet is held above a desk and a steel paper clip jumps up to it. What kind of force moved the clip?

Which material will a magnet attract?

A toy box lid keeps swinging open. Design A adds a magnet to the lid; Design B adds a strip of tape. Which design holds the lid shut and still lets a child open it?

A ball on a string is swung around and around above a child's head. What path does the ball keep following?

A wind-up toy moves in a repeating zigzag path: forward, turn right, forward, turn left, forward, turn right, and so on. The toy just finished a left turn. What will it do next?

A rubber ball is dropped and keeps bouncing in the same spot until it stops. What pattern does its motion make?

A balloon is rubbed on a wool sweater and then held near a girl's hair. What happens to her hair?

The north pole of one bar magnet is held close to the north pole of a second bar magnet. What will the two magnets do?

A toy car must be moved across a table without anyone touching it. Design A hides a magnet inside the car. Design B paints the car with shiny metal-colored paint. Which design meets the need?

A screen door must hold shut by itself. Design A faces two magnets so they attract. Design B faces two magnets so they push apart. Which design holds the door shut?

Steel nails are mixed with plastic beads in a tray. Design A drags a magnet through the mix. Design B drags a plastic comb through the mix. What design separates the nails?