Earth’s rotation takes about

• 365 days.
• 6 months.
• 24 hours.
• 1 month.

Day and night are caused by

• the tilt of Earth’s axis.
• Earth’s revolution around the sun.
• eclipses.
• Earth’s rotation on its axis.

One complete revolution of Earth around the sun takes about

• one rotation.
• one rotation.
• one year.
• one eclipse.

Earth has seasons because

• it rotates on its axis.
• the distance between Earth and the sun changes.
• its axis is tilted as it moves around the sun.
• the temperature of the sun changes.

When the north end of Earth’s axis is tilted toward the sun, North America will experience

• more indirect rays and shorter days.
• more indirect rays and longer days.
• more indirect rays and longer days.
• more direct rays and longer days.

The phase of the moon you see depends on

• where you are on Earth’s surface.
• how much of the sunlit side of the moon faces Earth.
• how much of the moon’s surface is lit by the Sun.
• how much of the moon’s surface is lit by the Sun.

From new moon phase to full moon phase, you see

• an increasing amount of the lighted side of the moon.
• a decreasing amount of the lighted side of the moon.
• the same amount of the lighted side of the moon.
• more of the lighted side, then less of the lighted side of the moon.

For a solar eclipse to occur,

• the sun must be directly between Earth and the moon.
• the moon must be directly between Earth and the sun.
• the moon must be at right angles to the Earth and the sun.
• the sun must be directly between Earth and the moon.

During what phase of the moon can a lunar eclipse occur?

• new moon
• first quarter
• waxing gibbous
• full moon

When are tides highest?

• during the moon’s first quarter phase
• when the sun, Earth, and the moon are nearly in a line
• during the moon’s third quarter phase
• when the moon is at a right angle to the sun