Astro Ch 1

Earth's rotation takes

• 24 hours

• 365 days

• 6 months

One complete revolution of Earth around the sun takes about

• one eclipse

• one season

• one year

Earth has seasons because

• it's tilted on its axis

• the temperature of the sun changes

• the distance between Earth and the sun changes

The phase of the moon you see depends on

• if an eclipse is occurring

• how much sunlit side of the moon faces Earth

• where you are on the Earth's surface

How large is the moon compared to Earth?

• 1/4 the diameter

• the same diameter

• 1/2 the diameter

An equinox occurs when

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

• neither end is tilted towards the sun

• Earth's south axis is tilted away from the sun

You are less likely to see a solar eclipse than a lunar eclipse because

• new moon phases occur less often than full moon phases

• only people on the daytime side of earth see a solar eclipse

• the moon's umbra only covers a small area on Earth's surface

The temperature of the moon's surface varies greatly from day to night because the moon has

• many craters

• highlands

• no atmosphere

Where might water be found on the moon?

• inside moon rocks

• in the maria

• near the poles in craters

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

• more direct rays and shorter days

• more direct rays and longer days

• more indirect rays and shorter days