Gravity Answers

1

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What units are used to measure mass and weight?

M

Mass and weight are measured in kilograms.

M

Mass and weight are measured in newtons.

M

Mass is measured in kilograms, and weight is measured in newtons.

M

Mass is measured in newtons, and weight is measured in kilograms.

2

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The gravitational force between two objects is 100 N.

2

25 N

5

50 N

2

200 N

4

400 N

3

Which statement best compares the accelerations of two objects in free fall?

A

The heavier object has a greater acceleration.

B

The object that has the greater surface area has the lower acceleration.

C

The object that has the smaller mass has the greater acceleration.

D

The objects have the same acceleration.

4

When does a skydiver achieve terminal velocity?

A

when gravity equals air resistance

B

when gravity is greater than air resistance

C

when air resistance acts on the diver and gravity does not

D

when gravity acts on the diver and air resistance does not

5

Increasing which factor will cause the gravitational force between two objects to decrease?

A

weights of the objects

B

distance between the objects

C

acceleration of the objects

D

masses of the objects

6

The table shows the masses of four objects.

A

the book

B

the rock

C

the box

D

the fish

7

A ball is thrown forward at 5 m/s.

A

The ball would follow a curved path on Earth but a straight path on the moon.

B

The ball would follow the same curved path on Earth as on the moon.

C

The ball would curve down more sharply on Earth than on the moon.

D

The ball would curve down on Earth but curve up on the moon.

8

Which change will always result in an increase in the gravitational force between two objects?

A

increasing the masses of the objects and increasing the distance between the objects

B

decreasing the masses of the objects and decreasing the distance between the objects

C

increasing the masses of the objects and decreasing the distance between the objects

D

decreasing the masses of the objects and increasing the distance between the objects

9

Which describes an object in projectile motion?

A

Gravity acts to push the object sideways.

B

The object moves in a straight path.

C

The forward velocity of the object is 0 m/s.

D

The object’s inertia carries it forward.

10

Hector drew the diagram below to illustrate projectile motion.

H

He should switch the labels “Gravity” and “Inertia.”

H

He should make the arrow for “Path” curve downward.

H

He should switch the labels “Inertia” and “Path.”

H

He should make the arrow for “Inertia” curve downward.

11

Read the passage and then answer the following question. You are going to visit the zoo in Honduras. You write a letter to your family about what you hope to see. Hola Familia, Mañana voy al zoológico. Espero ver muchos animales allí. El primer animal que quiero ver es un oso negro muy grande. Y después quiero ver un león. Los otros animales que quiero ver son tigres y ovejas blancas. El animal que más me gustaría ver es el mono. ¡Qué lindo! Yo voy a estar muy contenta mañana. Con cariño, Marta What is the first animal Marta wants to see at the zoo?

A

a tiger

B

a monkey

C

a lion

D

a bear

12

What originally made Trujillo a target for attacks?

A

good access to waterways

B

gold and silver mined nearby

C

crossroads for many educated people

D

excellent infrastructure

13

What do Hondurans say to each other when passing on the street?

A

buen provecho

B

abrazo

C

Don

D

adiós

14

What did the grassroots activist address in the interview? Choose three correct answers.the importance of grassroots activism in communitiestools available to teens for creating changethe most interesting protest they ever took part inthe best strategies for contacting lawmakersadvice for students who want to become activists

A

the importance of grassroots activism in communities

B

tools available to teens for creating change

C

the most interesting protest they ever took part in

D

the best strategies for contacting lawmakers

E

advice for students who want to become activists

15

What is the weight, on Earth, of a book with a mass of 1.5 kg?

A

1.5 N

B

6.5 N

C

11.3 N

D

14.7 N

16

Read the passage and then answer the following question. You are going to visit the zoo in Honduras. You write a letter to your family about what you hope to see. Hola Familia, Mañana voy al zoológico. Espero ver muchos animales allí. El primer animal que quiero ver es un oso negro muy grande. Y después quiero ver un león. Los otros animales que quiero ver son tigres y ovejas blancas. El animal que más me gustaría ver es el mono. ¡Qué lindo! Yo voy a estar muy contenta mañana. Con cariño, Marta What can we assume is Marta's favorite animal?

A

the monkey

B

the bear

C

the cat

D

the snake

17

Who continually attacked Trujillo?

A

the Spanish

B

the French

C

Peru

D

pirates

18

What forms of transportation do people rely on for public transport in Honduras?

A

buses and taxis

B

buses and skateboards

C

private cars and buses

D

private cars and taxis

19

Read the passage and then answer the following question. You are going to visit the zoo in Honduras. You write a letter to your family about what you hope to see. Hola Familia, Mañana voy al zoológico. Espero ver muchos animales allí. El primer animal que quiero ver es un oso negro muy grande. Y después quiero ver un león. Los otros animales que quiero ver son tigres y ovejas blancas. El animal que más me gustaría ver es el mono. ¡Qué lindo! Yo voy a estar muy contenta mañana. Con cariño, Marta Decide if the following statement is True or False.Marta is excited to see white pigs at the zoo.

A

True

B

False

20

How many times was Trujillo destroyed?

A

once

B

twice

C

many times

D

zero times

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