Space Review

Earth revolves around the sun. Look closely at the illustration below, which shows Earth revolving around the sun. How long would it take for Earth to travel between points 4 and 2?

• one week

• one month

• six months

• twelve months

What is the lunar phase where the moon is the darkest?

• Full Moon

• New Moon

• Crescent

• Gibbous

Earth and the other planets closest to the Sun are made mostly of _______

• gas
• metal
• water
• rock

Earth's ________ on its axis causes day and night.

• rotation
• revolution
• phase
• comet

The __________ has planets, moons, comets, and asteroids.

• solar system
• earth
• rotation
• United States

Why does Earth have different seasons? 

• because of the distance between Earth and the sun 
• because of the speed of Earth as it rotates on its axis 
• because of the amount of light blocked by the moon on its axis 
• because of the tilt of Earth on its axis as it moves around the sun 

Which of the following is true of the Sun?

• The Sun is the closest star to Earth.

• The Sun is the largest star in the Milky Way.

• The Sun is the largest planet in our Solar System.

• The Sun is an example of a galaxy that gives off light energy.

Brandon has learned that many stars are actually larger than the Sun. If this is true, why do these stars appear like points of light in the sky?

• These stars are hotter than the Sun.

• These stars have less mass than the Sun.

• These stars are farther away from Earth than the Sun is

• These stars are made of different chemicals than the Sun.

The complete cycle of the moon lasts about a _.

• day
• year
• week
• month

Which of the following is NOT true of all the inner planets?

• They are made of solid rock.
• They are called gas giants.
• They do not have rings.
• They have impact craters.