physics topics

1. When objects collide and stay together
5. These are the smallest parts of everything that exists, like invisible Lego pieces.
8. When something spins on its axis
9. When objects collide and separate
11. This is the force that magnets have to attract metal objects.
16. When things want to stay still if they are still
17. The branch of physics that studies how things move
18. How many times something repeats itself in one second
19. This is the energy obtained from the movement of water, like in a dam.

2. When you push something and it pushes back with the same force
3. The repetitive motion of a pendulum
4. When something changes location or position
6. This is the energy we feel when something is hot, like the sun or fire.
7. An idea or riddle we make to try to explain something
10. The total force that pushes or pulls an object
12. This is the spark that appears when you rub a balloon and it sticks to your hair.
13. Motion, like ocean waves or sound
14. The force that keeps us on Earth
15. This is when something has very little heat energy and feels freezing, like ice.
20. Figures like the shape of an egg