Vocabulary

Part 1: As you read pps. 55 to 61, you will come across the following vocabulary words. Use the definitions below to help you with these words when you encounter them:

Gravity: The force that pulls objects towards Earth.

Friction: The force that once surface exerts on another when the two rub against each other.

Projectile: An object that is thrown.

Mass: The amount of matter in an object.

Weight: The force of gravity on an object at the surface of a planet.

Part 2: As new terms are introduced that you didn't know before reading, write them down below and copy the definition of each from the glossary: