Name:     ID: 
 
Email: 

AST CH1 Test

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Day and night are caused by
a.
the tilt of Earth's axis.
b.
Earth's revolution around the sun.
c.
eclipses.
d.
Earth's rotation on its axis.
 

 2. 

Earth's rotation takes about
a.
365 days.
b.
6 months.
c.
24 hours.
d.
1 month.
 

 3. 

One complete revolution of Earth around the sun takes about
a.
one rotation.
b.
one season.
c.
one year.
d.
one eclipse.
 

 4. 

Earth has seasons because
a.
Earth rotates on its axis.
b.
the distance between Earth and the sun changes.
c.
Earth's axis is tilted as it moves around the sun.
d.
the temperature of the sun changes.
 

 5. 

When the north end of Earth's axis is tilted toward the sun, North America will experience
a.
more indirect rays and shorter days.
b.
more indirect rays and longer days.
c.
more direct rays and shorter days.
d.
more direct rays and longer days.
 

 6. 

In the Southern Hemisphere, the summer solstice occurs when the sun is directly overhead at
a.
the equator.
b.
23.5° south latitude.
c.
23.5° north latitude.
d.
30° south latitude.
 

 7. 

An equinox occurs when
a.
neither end of Earth's axis is tilted toward nor away from the sun.
b.
the north end of Earth's axis is tilted away from the sun.
c.
the north end of Earth's axis is tilted toward the sun.
d.
Earth's axis is parallel to the sun's rays.
 

 8. 

Because the moon rotates once for each revolution around Earth,
a.
you see some phases more than others.
b.
a different side of the moon faces Earth each day.
c.
you never see the far side of the moon.
d.
the far side of the moon is visible only during the full moon phase.
 

 9. 

The phase of the moon you see depends on
a.
where you are on Earth's surface.
b.
how much of the sunlit side of the moon faces Earth.
c.
how much of the moon's surface is lit by the sun.
d.
whether or not an eclipse is occurring.
 

 10. 

From new moon phase to full moon phase you see
a.
an increasing amount of the lighted side of the moon.
b.
a decreasing amount of the lighted side of the moon.
c.
the same amount of the lighted side of the moon.
d.
more of the lighted side, then less of the lighted side of the moon.
 

 11. 

The amount of the lighted side of the moon you can see is the same during the
a.
new moon and full moon phases.
b.
new moon and first quarter phases.
c.
first quarter and third quarter phases.
d.
full moon and third quarter phases.
 

 12. 

For a solar eclipse to occur,
a.
the sun must be directly between Earth and the moon.
b.
the moon must be directly between Earth and the sun.
c.
the moon must be directly behind Earth.
d.
Earth must be directly between the sun and the moon.
 

 13. 

During what phase can a lunar eclipse occur?
a.
new moon
b.
first quarter
c.
waxing gibbous
d.
full moon
 

 14. 

You are less likely to see a solar eclipse than a lunar eclipse because
a.
the moon's shadow covers all of Earth during a lunar eclipse.
b.
new moon phases occur less often than full moon phases.
c.
only people on the daytime side of Earth can see a solar eclipse.
d.
you must be in the moon's shadow to see a solar eclipse.
 

 15. 

Tides are caused mainly by
a.
Earth's rotation on its axis, causing water to move.
b.
differences in how much the sun pulls on different parts of Earth.
c.
strong winds blowing water onto coasts.
d.
differences in how much the moon pulls on different parts of Earth.
 

 16. 

Most places on Earth experience
a.
one high tide and one low tide about every 25 hours.
b.
two high tides and one low tide about every 25 hours.
c.
one high tide and one low tide about every 12.5  hours.
d.
two high tides and two low tides about every 12.5  hours.
 

 17. 

It's a basic law of physics that for every force, or action, there is
a.
a decreased force, or reaction.
b.
an equal force in the same direction.
c.
an increased force, or reaction.
d.
an equal and opposite force, or reaction.
 

 18. 

How large is the moon compared to Earth?
a.
about the same diameter as Earth
b.
about one half the diameter of Earth
c.
about one fourth the diameter of Earth
d.
about one eighth the diameter of Earth
 

 19. 

Scientists think the moon was formed when
a.
a large object struck Earth, and material from both bodies combined.
b.
gravitational forces attracted materials from outer space.
c.
meteoroids collected and solidified within the pull of Earth's gravity.
d.
gases from Earth escaped from the atmosphere and condensed.
 

 20. 

Galileo thought that the dark, flat parts of the moon's surface were
a.
oceans.
b.
deserts.
c.
mountains.
d.
craters.
 

 21. 

Galileo saw that much of the moon's surface is covered with round pits called
a.
highlands.
b.
seas.
c.
craters.
d.
maria.
 



 
         Start Over