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Test Bank For The Cosmic Perspective 7th Edition By Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit $15.49
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Test Bank For The Cosmic Perspective 7th Edition By Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit

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Test Bank For The Cosmic Perspective 7th Edition By Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit

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  • 22 september 2023
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Test Bank For

The Cosmic Perspective
7th Edition
By
Jeffrey O. Bennett, Megan O. Donahue, Nicholas
Schneider, Mark Voit

,The Cosmic Perspective, (Bennett et al.)
Chapter 1 A Modern View of the Universe

Multiple-Choice Questions

1) What is the meaning of the word cosmos?
A) the origin of Earth and life upon it
B) the light from a distant astronomical object
C) the Milky Way
D) the sum total of all matter and energy, that is, everything within and between all galaxies
E) the dark sky
Answer: D

2) Which of the following has your "address" in the correct order?
A) you, Earth, solar system, Local Group, Local Supercluster, Milky Way
B) you, Earth, solar system, Milky Way, Local Supercluster, Local Group
C) you, Earth, solar system, Local Group, Milky Way, Local Supercluster
D) you, Earth, Local Group, Local Supercluster, solar system, Milky Way
E) you, Earth, solar system, Milky Way, Local Group, Local Supercluster
Answer: E

3) About where is our solar system located within the Milky Way Galaxy?
A) at the center of the galaxy
B) about 10 percent of the way from the center of the galaxy to the outskirts of the galactic disk
C) about two-thirds of the way from the center of the galaxy to the outskirts of the galactic disk
D) near the far outskirts of the galactic disk
E) in the halo of the galaxy above the galactic disk
Answer: C

4) Roughly how many stars are in the Milky Way Galaxy?
A) 1 billion
B) 100 billion
C) 10 billion
D) 100 million
E) 100 trillion
Answer: B

5) Modern telescopes are capable of seeing bright galaxies up to about
A) 1 million light-years away.
B) 10 million light-years away.
C) 1 billion light-years away.
D) 10 billion light-years away.
E) 1 trillion light-years away.
Answer: D

,6) Suppose we imagine the Sun to be about the size of a grapefruit. How big an area would the
orbits of the eight planets of the solar system cover?
A) the size of a typical dorm room
B) the size of a typical campus building
C) the size of a typical campus
D) the size of a small city
E) the size of a western state (e.g., Colorado)
Answer: C

7) What do we mean when we say that the universe is expanding?
A) Average distances are increasing between star systems within galaxies.
B) Everything in the universe is gradually growing in size.
C) Average distances are increasing between galaxies.
D) The statement is not meant to be literal; rather, it means that our knowledge of the universe is
growing.
E) Individual galaxies are gradually growing in size.
Answer: C

8) The age of the universe is
A) between 10 million and 16 million years.
B) between 100 million and 160 million years.
C) between 1 billion and 1.6 billion years.
D) between 10 billion and 16 billion years.
E) between 100 billion and 160 billion years.
Answer: D

9) How are galaxies important to our existence?
A) Without galaxies, there could not have been a Big Bang.
B) Without galaxies, the universe could not be expanding.
C) Galaxies prevent planets from leaving their orbits around stars; e.g., our galaxy prevents Earth
from leaving its orbit of the Sun.
D) Galaxies recycle heavy elements produced in stars into future generations of stars.
E) Galaxies provide the gravity that prevents us from falling off Earth.
Answer: D

10) Earth is made mostly of metals and rocks. Where did this material come from?
A) It was produced in the Big Bang.
B) It was created by chemical reactions in interstellar space.
C) It was produced by nuclear fusion in stars.
D) It was made by our Sun.
E) It was made by nuclear fission of uranium and other radioactive materials.
Answer: C

, 11) What is nuclear fusion?
A) an explosion caused by putting together two volatile chemicals
B) the process of splitting nuclei to produce energy
C) the process of turning matter into pure energy
D) the process of combining lightweight nuclei to make heavier nuclei
E) a process that only occurs in bombs
Answer: D

12) Why did Carl Sagan say that we are star stuff?
A) The composition of most stars (mostly hydrogen and helium) is about the same as the
composition of our bodies.
B) Cosmic rays reaching Earth from distant astronomical sources may be one source of
mutations that help evolution along.
C) Nearly every atom from which we are made once (before the solar system formed) was inside
of a star.
D) Nearly every atom from which we are made was once inside our star, the Sun.
E) Sagan thought that all of us have the potential to be movie (or TV) stars like he was.
Answer: C

13) Which of the following statements does not use the term light-year in an appropriate way?
A) It's about 4 light-years from here to Alpha Centauri.
B) It will take me light-years to complete this homework assignment.
C) A light-year is about 10 trillion kilometers.
D) It will take the Voyager spacecraft about 20,000 years to travel just 1 light-year.
E) The Milky Way Galaxy is about 100,000 light-years in diameter.
Answer: B

14) One light-hour is the distance that light travels in an hour. How far is this, in kilometers?
(Recall that the speed of light is 300,000 km/s.)
A) 300,000 km
B) 18 million km
C) 100 million km
D) 1.08 billion km
E) 9.46 trillion km
Answer: D

15) Suppose we look at a photograph of many galaxies. Assuming that all galaxies formed at
about the same time, which galaxy in the picture is the youngest?
A) the one that is farthest away
B) the one that is reddest in color
C) the one that is bluest in color
D) the one that is closest to us
E) the one that appears smallest in size
Answer: A

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