Name:     ID: 
 
Email: 

Plates & Astronomy Mid-Term

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

 1. 

How can you tell that Mercury is not a gas giant?
a.
because of where it orbits the sun
c.
because it is dense and rocky
b.
because it has no ring system
d.
because it has only one moon
 

 2. 

Which of the following statements is true?
a.
The universe is expanding outward.
b.
The universe is getting smaller every day.
c.
The universe contracts and expands on a regular basis.
d.
Scientists do not know if the universe is getting larger or smaller.
 

 3. 

To which of the two main groups of planets does Earth belong?
a.
the outer planets
c.
the terrestrial planets
b.
the gas giants
d.
the interior planets
 

 4. 

What holds a galaxy together?
a.
stars
c.
brightness
b.
gravity
d.
dust
 

 5. 

According to the big bang theory, the universe is about
a.
200 billion years old.
c.
4.5 billion years old.
b.
700 billion years old.
d.
13.7 billion years old.
 

 6. 

Which of the following is the largest?
a.
a solar system
c.
a star
b.
a galaxy
d.
a planet
 

 7. 

Which is the next planet moving outward from the sun after Saturn?
a.
Neptune
c.
Jupiter
b.
Uranus
d.
Venus
 

 8. 

Why is Venus the hottest planet?
a.
it has no atmosphere.
b.
The planet’s fast period of rotation.
c.
The planet’s retrograde spin on its axis.
d.
The greenhouse effect of its atmosphere.
 

 9. 

The length of a year on Earth is determined by Earth's
a.
rotation.
c.
revolution.
b.
axis tilt.
d.
gravitational pull.
 

 10. 

How often do tides rise and fall?
a.
once a day
c.
every 14 days
b.
about every 6 hours
d.
every 24 h, 50 m
 

 11. 

Which is a result of the tilt of Earth's axis?
a.
months
c.
days
b.
seasons
d.
years
 

 12. 

Why does it get dark at night?
a.
the Moon comes between the Earth and Sun
c.
our side of the Earth rotates away from the Sun
b.
the Sun goes behind the Earth
 

 13. 

Summer occurs on the hemisphere of Earth that is ____.
a.
tilted toward the Sun
c.
tilted away from the Sun
b.
turned toward the Sun
d.
turned away from the Sun
 

 14. 

Each year, Earth moves once around
a.
Mars.
c.
Venus.
b.
the Moon.
d.
the Sun.
 

 15. 

The order of the layers of the Earth from the surface to the center is:
a.
lithosphere, mesosphere, outer core, inner core
b.
lithosphere, mantle, outer core, inner core
c.
mesosphere, outer core, inner core, lithosphere
d.
lithosphere, mesosphere, inner core, outer core
 

 16. 

The largest layer of Earth is the
a.
crust.
c.
mantle.
b.
meridian.
d.
core.
 

 17. 

What is the liquid layer of the Earth’s core called?
a.
lithosphere
c.
inner core
b.
mesosphere
d.
outer core
 

 18. 

Wegener thought that all the continents were once together in one large continent called
a.
Gondwana.
c.
Eurasia.
b.
Laurasia.
d.
Pangaea.
 

 19. 

Most earthquakes happen at the edges of
a.
tectonic plates.
c.
earthquake zones.
b.
elastic deformations.
d.
shear waves.
 

 20. 

What type of boundary is formed when plates divide?
a.
convergent
c.
divergent
b.
horizontal
d.
transform
 



 
         Start Over