1. Gravity: A Force of Attraction
Chapter 1 Section 4 Review

2. 1. What is gravity?
A. a measure of the gravitational force exerted on an object
B. a measure of the amount of matter in an object
C. a force of attraction between objects due to their masses and the distance between the objects
D. a dance club

3. ANSWER: Gravity is…
C. a force of attraction between objects due to their masses and the distance between the objects

4. 2. What is weight?
A. a measure of the gravitational force exerted on an object
B. a measure of the amount of matter in an object
C. a force of attraction between objects due to their masses and the distance between the objects
D. Something you do at a bus stop

5. ANSWER: Weight is…
A. a measure of the gravitational force exerted on an object

6. 3. What is mass?
A. a measure of the gravitational force exerted on an object
B. a measure of the amount of matter in an object
C. a force of attraction between objects due to their masses and the distance between the objects
D. Something you attend on Sundays

7. ANSWER: Mass is…
B. a measure of the amount of matter in an object

8. 4. If Earth’s mass doubled without changing size, your weight would…
a. increase because gravitational force increases
b. decrease because gravitational force increases
c. increase because gravitational force decreases
d. not change because you are still on Earth

9. Answer
a. increase because gravitational force increases

10. 5. All matter has mass,
a. but objects with small masses are unaffected by gravity
b. and all mass is affected by gravity
c. but only the Earth’s gravity affects matter
d. but only the Earth’s and the sun’s gravity affects matter

11. ANSWER
b. and all mass is affected by gravity

12. 6. The greater an object’s mass…
a. the larger the gravitational force it exerts on other objects
b. the smaller the gravitational force it exerts on other objects
c. the more surface tension there is
d. the less friction it will produce

13. ANSWER
a. the larger the gravitational force it exerts on other objects

14. 7. The force of gravity… a. is not related to the mass of the objects
b. is only related to the mass of large objects
c. is related to the weight of the objects
d. is related to the mass of the objects

15. ANSWER
d. is related to the mass of the objects

16. 8. Mass is measured in… a. grams b. kilograms c. milligrams
d. all of the above

17. ANSWER: Mass is measured in
d. all of the above
Grams
Kilograms
Milligrams

18. 9. Weight is measured in…
a. grams
b. ounces
c. Newtons
d. pounds

19. ANSWER: Weight is measured in…
c. Newtons

20. c. increases only slightly d. increases greatly
10. As the distance between two objects increases, the force of gravity…
a. decreases
b. does not change
c. increases only slightly
d. increases greatly

21. ANSWER
a. decreases

22. 11. Which of the following does NOT describe mass?
a. Remains constant
b. Is a measure of matter
c. Is a measure of gravitational force
d. Is measured in kilograms

23. ANSWER
c. Is a measure of gravitational force

24. 12. Which of the following does NOT describe weight?
a. Changes as gravitational force changes
b. Is constant everywhere in the universe
c. Is a measure of gravitational force
d. Can be measured in Newtons

25. ANSWER
b. Is constant everywhere in the universe

26. a. 60 Newtons b. 60 Kilograms c. 36 Newtons d. 36 Kilograms
13. If a student has a weight of 360N on Earth, what is the student’s weight on the moon? (Hint: The moon has 1/6 of Earth’s gravity)
a. 60 Newtons
b. 60 Kilograms
c. 36 Newtons
d. 36 Kilograms

27. ANSWER
a. 60 Newtons

28. 14. The law of universal gravitation says that gravitational force is…
a. related to mass and distance
b. related to weight and distance
c. related to mass and friction
d. related to weight and friction

29. ANSWER
a. related to mass and distance

30. 15. Why are mass and weight often confused?
a. They are both constant on Earth
b. Gravity makes a difference
c. Mass changes
d. Weight doesn’t change

31. ANSWER
a. They are both constant on Earth

32. 16. A small apple weighs about…
a. 10 Newtons
b. 1 pound
c. 200 grams
d. 1 Newton

33. ANSWER
d. 1 Newton

34. 17. Weight is measured using a...
a. Balance
b. Spring scale
c. Thermometer
d. Ruler

35. ANSWER: Weight is measured using a…
b. Spring scale

36. 18. Mass is measured using a…
a. Balance
b. Spring scale
c. Thermometer
d. Ruler

37. ANSWER: Mass is measured using a…
a. Balance