QUESTION 1

1. Newton’s work on gravity supported the heliocentric view of the universe.
   

   
   True
   
   False
   

2 points

QUESTION 2

1. Some of our earliest writings about the nature of the universe come from the ancient Hindus.
   

   
   True
   
   False
   

2 points

QUESTION 3

1. Most of the universe is believed to be
   

   		dark energy
   		dark matter
   		baryonic material

3 points

QUESTION 4

1. A ___________ is a collection of dust and gas held together by gravity.
   

   		star
   		nebula
   		black hole

3 points

QUESTION 5

1. With advances in telescope technology, we can see that galaxies are moving _______ over time.
   

   		closer to each other
   		farther away from each other
   		in random directions

3 points

QUESTION 6

1. Define parallax in terms of the stars and explain why the positions of the stars appear different to us throughout the year.
   

   Path: pWords:0

4 points

QUESTION 7

1. Explain how we believe that the planets formed.
   

   Path: pWords:0

4 points

QUESTION 8

1. Our Sun is in the _______ of the Milky Way.
   

   		center
   		Orion Arm
   		Alpha Centauri cluster

3 points

QUESTION 9

1. The degree of flattening in a planet’s orbit is called its
   

   		rotation
   		eccentricity
   		gravitational collapse

3 points

QUESTION 10

1. Our solar system is part of which galaxy?
   

   		Andromeda
   		Milky Way
   		Aquarius

3 points

QUESTION 11

1. When the solar system formed, most of the mass ended up in the
   

   		planets
   		moons
   		Sun

3 points

QUESTION 12

1. Describe how sunlight travels to Earth and its role in life on Earth.
   

   Path: pWords:0

4 points

QUESTION 13

1. The inner planets all have
   

   		impact craters
   		tectonic surface features
   		both of the above

3 points

QUESTION 14

1. The inner solar system contains the
   

   		Jovian planets
   		terrestrial planets and asteroids
   		dwarf planets like Pluto

3 points

QUESTION 15

1. The dark areas of the Moon are called the terrae, and they are made of basaltic lava.
   

   
   True
   
   False
   

2 points

QUESTION 16

1. The force of gravity that would act on your body is weaker on the Moon than on Earth because the Moon is smaller than Earth.
   

   
   True
   
   False
   

2 points

QUESTION 17

1. Explain how scientists hypothesize the Moon formed.

   Path: pWords:0

4 points

QUESTION 18

1. Scientists believe the asteroids in the asteroid belt were never able to form a larger planet because of
   

   		their distance from the Sun
   		radiation from solar wind
   		gravitational interference from Jupiter

3 points

QUESTION 19

1. The mass of all the objects in the asteroid belt is larger than the mass of Earth.
   

   
   True
   
   False
   

2 points

QUESTION 20

1. What are some reasons that drive society’s exploration of space? Why do governments agree to spend billions of dollars to support space exploration?
   

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4 points

QUESTION 21

1. The strongest winds of any planet in the solar system are found on
   

   		Uranus
   		Earth
   		Neptune

3 points

QUESTION 22

1. Ganymede is a satellite of
   

   		Saturn
   		Jupiter
   		Neptune

3 points

QUESTION 23

1. The Great Red Spot on Jupiter is
   

   		caused by iron oxide soils
   		a giant storm
   		a massive volcanic eruption

3 points

QUESTION 24

1. Uranus and Neptune are made mostly of
   

   		silicate rocks
   		ice
   		plasma

3 points

QUESTION 25

1. Which mission landed the first humans on the Moon?
   

   		Apollo 11
   		Sputnik
   		Voyager

3 points

QUESTION 26

1. Which of the following is a goal of the U.S. Space Shuttle program?
   

   		get astronauts to permanent space stations
   		deliver satellites for exploratory research
   		both of the above

3 points

QUESTION 27

1. A main sequence star cools and expands. It must be entering which stage?
   

   		white dwarf
   		black dwarf
   		red giant

3 points

QUESTION 28

1. Main sequence stars have decreasing brightness with temperature.
   

   
   True
   
   False
   

2 points

QUESTION 29

1. On an HR diagram, very large stars tend to have high temperatures and high luminosities.
   

   
   True
   
   False
   

2 points

QUESTION 30

1. Almost all characteristics of a star are determined by its
   

   		position in its galaxy
   		closeness to other stars
   		initial mass

3 points

QUESTION 31

1. Which statement is true about the most massive stars?
   

   		They have shorter life spans than less massive stars.
   		They burn hydrogen slower than less massive stars.
   		They usually last hundreds of billions of years.

3 points

QUESTION 32

1. After a low-mass star burns all of its helium, it ejects a collection of gases called a
   

   		planetary nebula
   		black hole
   		pulsar

3 points

QUESTION 33

1. Stars spend about 90 percent of their lifetime fusing helium to make hydrogen.
   

   
   True
   
   False
   

2 points

QUESTION 34

1. Describe a neutron star and a pulsar.
   

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4 points