Tides and Their Effects

Daily or twice-daily changes in local sea level due to the moon's gravity are called what?

• Solar tides

• Neap tides

• Lunar tides

• Spring tides

What happens when a spot on Earth rotates through a tidal bulge?

• Low tide

• High tide

• Neap tide

• Spring tide

A higher-than-usual tide that occurs at new moon or full moon is called a(n) what?

• Neap tide

• Solar tide

• Spring tide

• Lunar tide

A lower-than-usual tide that occurs when the sun, moon, and earth form a right angle is called a(n) what?

• Spring tide

• Neap tide

• Solar tide

• Lunar tide

The moon is the only astronomical body that affects Earth's oceans. True or False?

• True

• False

It is possible for a body of water to have only a single high and low tide each day. True or False?

• True

• False

Tides have the potential to generate large amounts of energy. True or False?

• True

• False

Which type of current is associated with winds?

• Surface current

• Upwelling

• Downwelling

• Density current

What is associated with an underwater mudslide?

• Surface current

• Upwelling

• Downwelling

• Density current

Which type of current occurs when seawater piles up, as in the middle of a gyre or against a shore?

• Surface current

• Upwelling

• Downwelling

• Density current