Planetary Science I 3-5 Review

The bulge of water on the side of the Earth closest to the moon produces ___________.

• high tide

• low tide

• neap tide

• spring tide

Tides are caused by

• strong winds that blow over ocean waters.
• the interaction of Earth, the moon and the sun.

• the shifting of the plates on the ocean floor.
• variations in the salinity of ocean water

Which body has the greater effect on Earth's tides?

• Sun
• Saturn
• Moon 

• Venus

What causes tides?

• gravity

• wind
• spring
• neap

How many low tides and high tides happen in a day?

• 1 low tide, 1 high tide
• 4 low tides, 4 high tides
• 3 low tides, 3 high tides
• 2 low tides, 2 high tides

The Moon has a greater influence on Earth tides than the Sun because...

• it is smaller than the Sun
• it revolves around the Earth
• it is closer to the Earth

Earth's axis always points to the:

• North Star
• Sun
• Moon
• North Pole

Why do day and night occur on Earth? A diagram is provided to help.

• Because the Earth rotates

• Because the Earth rotates on its axis so the area in light is changing

• Half the Earth is in daylight and the other half is in darkness

• The Earth is always half sunlit, half in shadow, and rotates on its axis so the area in light is always changing

The diameter of the Moon is roughly ________ the diameter of Earth

• 1/2

• 1/3

• 1/4

• 1/8

A is a(n)

• Mare
• Highland
• Rille
• Scarp