Unit 6 Astronomy & Space Exploration Test Review

Earth’s rotation takes about ______.

• 365 days

• 6 months

• 24 hours

• 1 month

Earth has seasons because ______.

• it rotates on its axis

• the distance between earth & the Sun changes

• its axis is tilted as it moves around the sun

• the temperature of the sun changes

The phase of the moon you see depends on ______

• where you are on the 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

Galileo saw that much of the moon’s surface is covered with round pits called ______.

• highlands

• seas

• craters

• maria

An equinox occurs when ______.

• neither end of Earth’s axis is tilted toward or 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’s axis is parallel to the sun’s rays.

All objects are attracted to each other by the force of ______.

• weight

• mass

• inertia

• gravity

The space race was between ______.

• The U.S. & China

• Great Britain & Soviet Union

• Soviet Union & China

• U.S. & Soviet Union

Both reflecting and refracting telescopes are designed to ______.

• break visible light into the colors of the spectrum

• separate visible light from ultraviolet & radio waves

• gather & focus visible light

• work better with short-wave radiation

A star is ______when nuclear fusion starts.

• exploding

• dying

• born

• cooling

A supernova is the explosion of a dying ______.

• medium-mass star

• high mass star

• prostar

• low mass star