GP chapter 19

day and night are caused by _____

• the tilt of earths axis

• earth's revolution around the sun.

• earth's rotation on its axis.

• eclipses

earths rotation takes about _____

• 365 days

• 6 months

• 1 month

• 24 hours

one complete revolution of Earth around the sun takes about _____

• one rotation.

• one season.

• one year.

• one eclipse.

earth has seasons because _____

• earth rotates on its axis

• the distance between earth and the sun changes.

• earth's 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 direct rays and shorter days.

• more direct rays and longer days.

In the Southern Hemisphere, the summer solstice occurs when the sun is directly overhead at

• the equator.

• 23.5° south latitude.

• 23.5° north latitude.

• 90° north latitude.

An equinox occurs when

• neither end of Earth's axis is tilted toward nor away from the sun.

• the north end of Earth's axis is tilted away from the sun.

• the north end of Earth's axis is tilted toward the sun.

• Earth is upside down.

Because the moon rotates once for each revolution around Earth,

• you see some phases more than others.

• a different side of the moon faces Earth each day.

• you never see the far side of the moon.

• the far side of the moon is visible only during the full moon phase.

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.

• whether or not an eclipse is occurring.

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.