Geoscience Unit 2.5-2.8 Semester Review

Front

What motion is responsible for the lunar cycle?

Back

The moon's revolution around Earth.

Front

Why does the moon appear bright in the sky at night?

Back

It reflects light from the sun.

Front

When does the sun's gravity decrease tidal variations?

Back

When the sun's gravitational pull is perpendicular to the moon's gravitational pull.

Front

What does a typical tidal cycle consist of?

Back

2 high tides and 2 low tides.

Front

When does a solar eclipse occur?

Back

A solar eclipse only occurs during a new moon.

Front

What is the difference between a solar eclipse and a lunar eclipse?

Back

A solar eclipse occurs when the moon passes between the Earth and the sun, while a lunar eclipse occurs when the Earth passes between the sun and the moon.

Front

What causes tides on Earth?

Back

Tides are caused by the gravitational pull of the moon and the sun on Earth's oceans.

Front

What is the term for the highest point of a tide?

Back

High tide.

Front

What is the term for the lowest point of a tide?

Back

Low tide.

Front

How often do high and low tides occur?

Back

Typically, high and low tides occur approximately every 6 hours.