Chs 19 Earth, Moon and Sun + 20 The Solar System

Question 1

Which planet is farthest from the sun?

Accepted Answer

Pluto

Question 2

Why is it difficult for astronomers to study Mercury?

Accepted Answer

it is so close to the sun

Question 3

What really sets Saturn apart from the other planets?

Accepted Answer

it has the most spectacular rings of any planet

Question 4

What occurs during a full moon when Earth is directly between the moon and the sun?

Accepted Answer

lunar eclipse

Question 5

Which gas giant was discovered as a result of a mathematical prediction?

Accepted Answer

Neptune

Question 6

What are the 2 days of the year when neither hemisphere is tilted toward the sun called?

Accepted Answer

equinox

Question 7

What are maria?

Accepted Answer

regions formed from huge lava flows

Question 8

How does the pull of gravity on the surface of the moon compare to that of Earth's?

Accepted Answer

one sixth that of Earth

Question 9

Which of the following occurs once every 24 hours?

Accepted Answer

Earth rotates on its axis

Question 10

What are comets mostly made of?

Accepted Answer

ice, dust and small rocks

Question 11

At what angle is Uranus’s axis of rotation?

Accepted Answer

about 90 degrees

Question 12

What does Earth complete 365 times in one year?

Accepted Answer

rotations

Question 13

What is Earth's spinning on its axis called?

Accepted Answer

rotation

Question 14

What is the tendency of an object to resist a change in motion called?

Accepted Answer

inertia

Question 15

Where do most asteroids revolve around the sun?

Accepted Answer

between Mars and Jupiter

Question 16

Where does nuclear fusion occur in the sun?

Accepted Answer

in the core

Question 17

When do spring tides occur?

Accepted Answer

when the sun, moon and Earth line up

Question 18

What is Jupiter’s largest moon?

Accepted Answer

Ganymede

Question 19

In which direction does the Earth rotate on its axis?

Accepted Answer

from west to east

Question 20

What are the two days on which the sun is overhead at either 23.5° north or south called?

Accepted Answer

solstices

Question 21

Which of the following is true about the moon?

Accepted Answer

it has no atmosphere

Question 22

Why do some astronomers think Pluto should not be classified as a planet?

Accepted Answer

it is so small

Question 23

What is an area of cooler gas on the sun's surface called?

Accepted Answer

sunspot

Question 24

What is the force that propels a rocket forward called?

Accepted Answer

thrust

Question 25

What are meteoroids mostly made of?

Accepted Answer

rock and dust

Question 26

What are asteroids mostly made of?

Accepted Answer

chunks of rock

Question 27

What keeps Earth in orbit around the sun?

Accepted Answer

inertia and gravity

Question 28

Which planet has nearly the same diameter as Earth?

Accepted Answer

Venus

Question 29

What is similar about Mars and Earth due to their tilted axes?

Accepted Answer

they both have seasons

Question 30

What two things does the strength of gravity depend on?

Accepted Answer

distance and mass

Chs 19 Earth, Moon and Sun + 20 The Solar System

Questions 30

Chs 19 Earth, Moon and Sun + 20 The Solar System

Questions 30