Newton's Third Law: Action and Reaction

What You'll Learn

Newton's third law states that for every action there is an equal and opposite reaction. When you push against a wall, the wall pushes back on you with the same force.

Key Words

acceleration
velocity

Materials Needed

marbles
paper clips
rubber bands
blocks

Safety First

Adult supervision recommended.
Do not taste any materials.

Steps

Step 1 — Read

Read and learn: Newton's third law states that for every action there is an equal and opposite reaction. When you push against a wall, the wall pushes back on you with the same force.

Step 2 — Do

Build your model using the materials provided.

Step 3 — Observe

Use your senses (except taste) to describe what you notice.

Step 4 — Record

Write a summary of your findings in 3-5 sentences.

Check Your Understanding

Question 1

1 of 3

What is gravity?