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Stars and Planets

Multiple Choice
 

 1. 

What contains over 99% of the mass found in the Solar System?
a.
Jupiter
c.
the planets
b.
the Sun
d.
Earth and the Moon
 

 2. 

A group of stars, gas, and dust held together by gravity is a ____.
a.
galaxy
c.
Local Group
b.
constellation
d.
both a and b
 

 3. 

What is the name of the galaxy where is Earth is located?
a.
The Sol Galaxy
c.
The Solar System
b.
Milky Way Galaxy
d.
Andromeda
 

 4. 

Which object lies outside our Solar System?
a.
Ceres, the asteroid
c.
Halley’s comet
b.
Proxima Centauri, a red dwarf Star.
d.
Triton, a moon of Neptune
 

 5. 

The model of the solar system that says the Earth is in the center.
a.
Galilean
c.
heliocentric
b.
geocentric
d.
Big Bang
 

 6. 

Which objects are found in our solar system?
a.
constellations and galaxies
c.
planets and asteroids
b.
galaxies and asteroids
d.
planets and constellations
 

 7. 

What type of force causes planets to orbit the Sun?
a.
magnetism
c.
gravity
b.
electricity
d.
friction
 

 8. 

Our Solar System is in the Milky Way galaxy.  What type of galaxy is it?
a.
a classic galaxy
c.
an elliptical galaxy
b.
a spiral galaxy
d.
an irregular galaxy
 

 9. 

About how old do scientists think the Earth is?
a.
they have no idea
c.
between 4 and 5 billion years
b.
65 million years
d.
13 billion years
 

 10. 

Which of the following is the smallest object in our solar system?
a.
meteoroid
c.
planet
b.
galaxy
d.
star
 

 11. 

The model that says the Sun is the center of the Solar System is...
a.
what Aristotle believed
c.
the heliocentric model
b.
the geocentric model
d.
based upon Ptolemy’s idea
 

 12. 

Why does life not exist on Venus?
a.
it is covered with deep oceans of salt water
c.
its atmosphere of dense clouds of carbon dioxide and sulfuric acid make it too hot for life
b.
it is slightly smaller than the Earth
d.
it rotates so fast that it has very short days
 

 13. 

The distances to nearby stars can be measured by using ____.
a.
lightyears
c.
temperature
b.
a tape measure
d.
millions of miles
 

 14. 

mc014-1.jpg
What is the name of this group of objects?
a.
the Milky Way Galaxy
c.
the terrestrial planets
b.
the Sun-Earth system
d.
the Solar System
 

 15. 

What is the MAIN difference between asteroids and comets?
a.
comets have no solid matter, asteroids are solid and liquid
c.
most comets lie between Mars and Jupiter.  Asteroids are usually way out beyond Neptune.
b.
Comets form clouds of gas and dust near the Sun and asteroids remain solid
d.
comets orbits are usually very circular, and asteroids orbit out beyond Pluto
 

 16. 

A science journal publishes information on the planets Jupiter, Saturn, Uranus, and Neptune.  Which of these is a characteristic of all these planets?
a.
rocky crust
c.
liquid water and oxygen
b.
core of molten metals
d.
gas giants and a large number of moons
 

 17. 

Who used his telescope to help prove that the Sun was in the center of the Solar System?
a.
Galileo
c.
Ptolemy
b.
Aristotle
d.
Copernicus
 

 18. 

A ____ is a region so dense that nothing, including light, can escape its gravity field.
a.
supergiant
c.
white dwarf
b.
black hole
d.
supernova
 

 19. 

One year on Earth is 365 days, but one year on Mercury is 88 days.  Which of these explains why there is a difference in the length of the planets’ years?
a.
Earth is slowed down because of the Moon’s orbit around the Earth.
c.
Earth’s orbit is closer to the Sun, so the path it travels is shorter
b.
Mercury is closer to the sun, so the orbit is shorter and takes less time to complete
d.
Mercury orbits the Sun at a much slower pace than Earth orbits the Sun
 

 20. 

Mercury, Venus, Earth, and Mars are the four planets closest to the Sun.  Which of these characteristics is common to these four planets?
a.
liquid water and oxygen
c.
large size
b.
many moons
d.
rocky surface
 

 21. 

A red shift in the spectrum of the light from an object indicates the object is moving ____ you.
a.
toward
c.
at a right angle from
b.
away from
d.
none of the above
 

 22. 

The Big Bang theory of the formation and expansion of the universe is supported by the observed ____.
a.
red shift
c.
"big crunch"
b.
shorter light wavelengths
d.
blue-violet shift
 

 23. 

Which is located furthest from our sun?
a.
asteroid belt
c.
meteors
b.
other stars
d.
comets
 

 24. 

At one time, observers believed that the Sun revolved around Earth. This model was superseded/replaced by the heliocentric model which places the Sun at the center of the universe. Which BEST describes how this relates to the nature of science?
a.
as we gain new knowledge, we can change our models
c.
models are an inefficient way of explaining observations
b.
scientific knowledge is unchanging
d.
astronomy is an inexact science
 

 25. 

Which planet is the fourth planet from the Sun?
a.
Mars
c.
Earth
b.
Venus
d.
Jupiter
 



 
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