Science Concepts

2. The bouncing of waves off of an object.
3. A positively charged subatomic particle.
7. Objects or substances that take in heat.
8. The force that pulls objects together.
9. Machines used to make life easier by increasing time and lowering effort required to do an action.
13. The average kinetic energy of particles in matter.
14. The ability to do work.
15. The standard unit for measuring temperature in scientific fields.
17. A push or pull acted on an object.
19. The densely packed center of an atom.
20. The change in matter from liquid to gas.
21. The force caused by gravity acting on an object.

1. Resistance in movement caused by objects rubbing against each other.
4. Properties that can be observed without changing the identity of a substance.
5. Waves that move up and down (crests and troughs).
6. The amount of matter present in a substance/object.
10. The ratio of mass to volume.
11. The total amount of forces acted on an object.
12. The process of a plant creating food for itself.
16. The speed of an object moving in a certain direction.
18. Objects in motion will stay in motion, and objects at rest will stay at rest, unless acted upon by an unbalanced force.