Earth, Moon, and Sun

The Sun moves which way across the sky?

• North to South

• East to West

• West to East

• South to North

The Sun has less effect on tides than the Moon because

• the Sun has less gravity

• the Moon is so much larger

• the Sun is so much farther away

• the Sun's effect is cancelled out by the Moon's effect

Why does the Earth have seasons?

• its tilt

• its elliptical orbit

• its rotation

• its magnetic field

Conditions on the Moon are

• extremely wet and dry

• very stormy near the equator

• extremely hot and extremely cold

• very like on Earth

Water on the Moon is found as

• vapor in the atmosphere

• liquid in soil

• ice in deep craters

• vapor, liquid and ice like on Earth

The far side of the Moon

• is the same as the near side

• faces us only at night

• faces us only in the day

• has only been seen by spacecraft

What is the visible surface of the sun?

• photosphere

• chromosphere

• corona

• none of these

The movement of molten metal in the outer core results in

• plate tectonic motions

• volcanism

• the auroras

• the magnetic field

Solar flares

• release large amounts of radiation

• can knock out entire power grids

• can knock out communications

• all of these

One of these is true about the geology of the Moon.

• The light colored mountains crystallized from magma.

• The dark colored lavas erupted from mantle convection.

• The craters are parts of volcanoes.

• The features are very similar to those found on Earth.