m1-2 science

21 - Newton's Third Law

Title

Newton's Third Law

Reading Text

Isaac Newton's Third Law explains how forces work in pairs. It says that for every action, there is a reaction. The reaction is equal in size but opposite in direction. This means you cannot touch something without it touching you back. Imagine you are on a skateboard. If you push a wall forward, you move backward. The wall pushes you back with the same force. This law also explains how rockets fly. The rocket engine pushes gas down very fast. The gas pushes the rocket up into the sky. Forces always happen together.

Activities

Vocabulary

Definitions:

Text: Something you do, like a push.
Text: What happens in return to an action.
Text: Two things that go together.
Text: Going in a completely different way.
Text: The same size or amount.

Items:

Label: Action
Answer: A
Label: Reaction
Answer: B
Label: Pairs
Answer: C
Label: Opposite
Answer: D
Label: Equal
Answer: E

Fill In The Blanks:

Before: Forces always come in
After: .
Answer: pairs
Before: For every action, there is a
After: .
Answer: reaction
Before: Up is the
After: of down.
Answer: opposite
Before: If two things are the same size, they are
After: .
Answer: equal
Before: Pushing the wall is an example of an
After: .
Answer: action