1. 2nd Grade Review Part Two
Forces and Energy

2. Force
A push or a pull that makes something move

3. Motion
The act of moving people, animals, and things

4. Magnetism A force that pulls on some metals with a magnet
Magnets are in
things we use
everyday

5. Gravity
A force that
pulls things
towards the
center of
Earth

6. Friction A force that makes it harder to move things
Smooth road-less friction-easier to move
Rough road-more friction-harder to move

7. Measuring Motion
Motion can be measured by how far, how much time, or how much force is needed to move something.

8. Energy
The ability
to cause
change

9. Light Energy
Energy that
makes it
possible
to see
matter and
color

10. Heat Energy
Energy that
makes matter
hotter or
colder

11. Sound Energy Energy that you hear Made when objects vibrate
Can travel through solids, liquids, and gases
vibration

12. Vibrate
To move back
and forth
very fast

13. How Sound Travels A person moves an object. The object vibrates.
The vibration moves through air, liquid, or solid.
A person hears the sound.

14. Loudness
How loud or soft is the sound?