2. Jeopardy Force Mass Measuring Weight A $100 B $200 C $300 D $400 E $500 F $100P $100K $100 G $200L $200Q $200 H $300M $300R $300 I $400 N $400S $400 J $500O $500T $500 Final Jeopardy

3. $100 Question from Force What is a force?

4. $100 Answer from Force A force is a push or a pull that acts on an object. A force can cause an object to move or change.

5. $200 Question from Force What types of forces are there?

6. $200 Answer from Force ◆ Friction works to slow down or stop motion due to surfaces rubbing against each other. ◆ Tension force is experienced by a rope when it is pulled at either end. ◆ Elastic force is exerted when a spring returns to its normal shape after being stretched. Action-at-a-distance forces act on objects without touching them. Examples of action-at-a-distance forces: ◆ Gravitation pulls objects toward each other. A ball that is tossed in the air falls to the ground because of this force. ◆ Magnetic force pulls or pushes on metals and compounds such as iron, nickel, and cobalt. ◆ Static electricity, such as in lightning, causes pushing and pulling forces.

7. $300 Question from Force How are forces measured?

8. $300 Answer from Force Force is measured in units called newtons. It takes about one newton (1 N) of force to lift or to hold up the mass of a medium apple against the force of gravity.

9. $400 Question from Force What happens when forces are balanced and unbalanced?

10. $400 Answer from Force Balanced forces are forces that are equal in size and act in opposite directions. If balanced forces act on an object that is not moving, it will not move. If the object is moving, it will keep moving in the same direction and at the same speed. Unbalanced forces are not equal in size. They do not have to act in opposite directions. If unbalanced forces act on an object that is not moving, it can move. The movement is in the direction of the stronger force.

11. $500 Question from Force True or False? “A force cannot set a motionless object in motion.”

12. $500 Answer from Force False

13. $100 Question from Mass What are two categories into which all forces can be placed? A. contact forces and balanced forces B. unbalanced forces and gravitational forces C. contact forces and action-at-a- distance forces D. balanced forces and action-at-a- distance forces

14. $100 Answer from Mass C. Contact forces and action-at-a-distance forces

15. $200 Question from Mass Which of the following is not a contact force? A. elastic B. tension C. friction D. static electricity

16. $200 Answer from Mass D. Static Electricity

17. $300 Question from Mass A person runs a lot slower on sand than on pavement. What type of force is responsible for this? A. elastic B. tension C. friction D. static electricity

18. $300 Answer from Mass C. friction

19. $400 Question from Mass You rub a balloon on your head and as you pull the balloon away your hair starts to stand up. What force causes your hair to be attracted to the balloon? A. elastic B. tension C. static electricity D. gravitation

20. $400 Answer from Mass C. Static Electricity

21. $500 Question from Mass What is a newton a unit for? A. mass B. force C. density D. volume

22. $500 Answer from Mass B. force

23. $100 Question from Measuring How is weight different from mass?

24. $100 Answer from Measuring Weight is how much an object weighs. Mass is how much space the object takes up.

25. $200 Question from Measuring A soccer ball is kicked at high speed toward a goalie. The goalie grabs the shot and stops the ball completely. Has the goalie applied a force to the soccer ball?

26. $200 Answer from Measuring Yes

27. $300 Question from Measuring Mass is best determined using a : A. force meter. B. spring scale. C. newton gauge. D. balance scale.

28. $300 Answer from Measuring D. Balance scale

29. $400 Question from Measuring What are force meters equipped with?

30. $400 Answer from Measuring A spring or similar elastic device that stretches or compresses a response to being pulled or pushed.

31. $500 Question from Measuring What is the most common type of force meter?

32. $500 Answer from Measuring A newton gauge. It’s also called a spring scale.

33. $100 Question from Weight The mass of a large egg can be described as 150 g. Which of the following would most accurately describe the weight of the large egg? A. 150 N B. 15000 N C. 15 N D. 1.5 N

34. $100 Answer from Weight D. 1.5 N

35. $200 Question from Weight An astronaut orbiting Earth stands on a bathroom scale, which reads zero. The most reasonable explanation for this is : A. the forces acting on the astronaut are unbalanced. B. there is very little gravitational force acting on the astronaut. C. the astronaut is standing on the moon. D. the astronaut's mass has decreased by going into space.

36. $200 Answer from Weight B. there is very little gravitational force acting on the astronaut.

37. $300 Question from Weight Is a bathroom scale a weight scale or a mass scale?

38. $300 Answer from Weight It’s a weight scale.

39. $400 Question from Weight What is weight?

40. $400 Answer from Weight The amount of force on an object due to gravity.

41. $500 Question from Weight What is mass?

42. $500 Answer from Weight The quantity of matter which an object or thing contains.

43. Final Jeopardy How much would you weigh on the Moon compared to how much you weigh on Earth?

44. Final Jeopardy Answer You would weigh approximatley one sixth the amount you weigh on Earth.