Unit 7: Space

Which statement best describes the relationship between the sun, moon, and Earth during a first quarter moon?

• Half of the sun's light is blocked from the moon by Earth's shadow.
• The moon is located at a right angle to the sun relative to Earth.
• Half of the sun's light is blocked by the moon in its position between thesun and Earth.
• The moon is located in an almost direct line with Earth and the sun, exceptthat it is slightly higher than Earth.

Which of the following contributes most to Earth's tides?

• the amount of heat from the sun
• the direction of ocean currents
• the positions of the sun, moon, and Earth
• the speed of the jet stream

Which of the following has the greatest effect on Earth's seasons?

• the North Pole
• the tilt of Earth's axis
• the tropic of Cancer
• ocean currents

Which statement best explains why there are different seasons?

• The distance between Earth and the sun ch axis.
• Most of Earth's landmass is located in the Northern Hemisphere.
• Earth's axis tilt changes the distribution of the sun's heat as Earth revolves around the sun.
• The temperature of the sun changes depending upon the distancebetween the sun and Earth.

What causes objects to be grouped together in space?

• Gravity
• Motion
• Rotation
• Orbit

What do planets orbit?

• Galaxies
• Solar systems
• Moons
• Stars

Which of these is the largest?

• A star
• A galaxy
• A solar system
• A planet

Which of these is the smallest?

• A solar system
• A galaxy
• A universe
• A planet

Which statement best explains why there are different seasons?

• The distance between Earth and the sun changes as Earth rotates on itsaxis
• Most of Earth's landmass is located in the Northern Hemisphere
• Earth's axis tilt changes the distribution of the sun's heat as Earth revolves around the sun
• The temperature of the sun changes depending upon the distance betweenthe sun and Earth

Why does the moon look the way it does during a new moon?

• The quarter of the moon we see from the earth is a shadow on the left side.
• The half of the moon we see from earth is dark.
• The half of the moon we see from earth is completely lit up by the sun.
• The half of the moon we see from earth reflects light on the entire sun.