Gravity: A Force of Attraction

Chapter 1 Section 4 Review

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

ANSWER: Gravity is…

•C. a force of attraction between objects due to their masses and the distance between the objects

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

ANSWER: Weight is…

•A. a measure of the gravitational force exerted on an object

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

ANSWER: Mass is…

•B. a measure of the amount of matter in an object

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

Answer

•a. increase because gravitational force increases

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

ANSWER

•b. and all mass is affected by gravity

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

ANSWER

•a. the larger the gravitational force it exerts on other objects

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

ANSWER

•d. is related to the mass of the objects

8. Mass is measured in…

•a. grams•b. kilograms•c. milligrams•d. all of the above

ANSWER: Mass is measured in

•d. all of the above•Grams•Kilograms•Milligrams

9. Weight is measured in…

•a. grams•b. ounces•c. Newtons•d. pounds

ANSWER: Weight is measured in…•c. Newtons

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

ANSWER

•a. decreases

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

ANSWER

•c. Is a measure of gravitational force

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

ANSWER

•b. Is constant everywhere in the universe

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

ANSWER

•a. 60 Newtons

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

ANSWER

•a. related to mass and distance

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

ANSWER

• a. They are both constant on Earth

16. A small apple weighs about…

•a. 10 Newtons•b. 1 pound•c. 200 grams•d. 1 Newton

ANSWER

•d. 1 Newton

17. Weight is measured using a...

•a. Balance•b. Spring scale•c. Thermometer•d. Ruler

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

18. Mass is measured using a…

•a. Balance•b. Spring scale•c. Thermometer•d. Ruler

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