2. 20 pt 30 pt 40 pt 50 pt 10 pt 20 pt 30pt 40 pt 50 pt 10 pt 20 pt 30 pt 40 pt 50 pt 10 pt 20 pt 30 pt 40 pt 50 pt 10 pt Forces Energy Motion

3. Any push or pull that causes two or more objects to change direction.

4. Force

5. A force that opposes motion when 2 surfaces rub against each other.

6. Friction

7. A force of attraction between magnets and magnetic objects...

8. Magnetism

9. The force that pulls objects in the universe together...

10. Gravitation

11. The three forces that affect objects on Earth every day are...

12. Friction, magnetism, gravity

13. The state of matter that does not have a definite shape or volume.

14. Balanced forces

15. The ability of one substance to be dissolved in another substance.

16. Unbalanced forces

17. Adding or subtracting the individual forces gives a value of the combined forces that is called its...

18. Net force

19. Something that makes a task easier by changing the size or direction of a force or the distance over which the force acts.

20. A machine.

21. The use of a force to move an object through a distance.

22. Work

23. An object’s place or location...

24. Position

25. A measure of the distance an object moves in a given amount of time...

26. Speed

27. An object’s speed in a particular direction is its...

28. Velocity

29. Any change in velocity is called...

30. Acceleration.

31. A measure of how hard it is to slow down or stop an object...

32. Momentum.

33. The property of matter that keeps an object moving in a straight line or keeps it at rest...

34. Inertia

35. Finish this statement: For every action, there is an equal and opposite ________.

36. Reaction.

37. The ability to cause changes in matter is called...

38. Energy

39. The energy of motion is called...

40. Kinetic energy.

41. The energy that an object has because of where it is or because of its condition is called...

42. Potential energy.

43. The table of elements in order of increasing atomic number; grouped by similar properties.

44. Periodic table

45. A substance made of the atoms of two or more different elements.

46. Compound

47. What is photosynthesis?

48. The process plants use to make food

49. Where do plants get their green color?

50. From chlorophyll

51. What do plants make during photosynthesis?

52. Oxygen!!