1. Forces and Motion A Review in Vocabulary

2. Force A force is a push or a pull. A force is a push or a pull.

3. Direction Direction is the path that a moving object follows.

4. Speed Speed is how quickly an object moves. Speed is how quickly an object moves.

5. Mass Mass is a measure a measure of the amount of matter an object contains, measured in grams.

6. Matter Matter is anything that has mass.

7. Gravity Gravity of the earth pulls objects towards the center of the planet.

8. Weight The weight of an object weight of an object depends on the pull of gravity on its mass; It can change when the force of gravity changes. The weight of an object weight of an object depends on the pull of gravity on its mass; It can change when the force of gravity changes.

9. Motion Motion is the way an object changes position.

10. Friction Friction is a force that acts between two objects that touch each other or rub together.

11. Friction Activity Click on the link below to review how friction works. Friction game

12. Brain Pop, Jr. Click on each link to watch the short movie and review your words. Pushes and Pulls Pushes and Pulls Gravity Review the concepts of force, position, motion, speed, and friction Review the concepts of gravity, force, mass, weight, and Solar System