EAPS 105 EXAM 1 HW QUESTIONS
WITH CORRECT ANSWERS
What lies in the center of the galaxy?
a. a void, like the eye of a hurricane
b. the oldest stars in the galaxy
c. a supermassive black hole
d. the home world of our galactic empire - Correct Answers -c. a supermassive black
hole
Which of the following statements about the solar system are correct?
a. It formed 4.6 billion years ago.
b. At least one of the giant planets are formed of rock and metal like terrestrial planets.
c. The orbits of the major planets range from circular to highly elliptical.
d. All of the above are true. - Correct Answers -a. It formed 4.6 billion years ago.
About what percentage of the Solar System's mass is contained in the Sun?
a. 50%
b. 70%
c. 85%
d. 99.9% - Correct Answers -d. 99.9%
Which of the statements is true?
a. An astronomical unit (AU) is the distance from the Earth to the sun.
b. Jupiter is about 5 AU from the Sun.
c. With a few exceptions, the farther a planet or belt is from the Sun, the larger the
distance between its orbit and the orbit of the next nearer object to the sun.
d. All of the above - Correct Answers -d. All of the above
What is a terrestrial planet?
a. A planet composed mainly of hydrogen and helium gas.
b. A planet composed mainly of ices.
c. A planet composed primarily of silicate rocks or metals.
d. A planet that has not cleared its orbit of other objects. - Correct Answers -c. A planet
composed primarily of silicate rocks or metals.
What is a gas giant?
a. A planet composed mainly of hydrogen and helium gas.
b. A planet composed mainly of ices.
c. A planet composed primarily of silicate rocks or metals.
, d. A planet that has not cleared its orbit of other objects. - Correct Answers -a. A planet
composed mainly of hydrogen and helium gas.
In planetary science, what does the term ice refer to?
a. Compounds with hydrogen
b. Volatile chemical compounds with freezing points above 100k, such as water,
ammonia or methane.
c. Any compound below its freezing temperatures
d. Compounds that are transparent to visible light. - Correct Answers -b. Volatile
chemical compounds with freezing points above 100k, such as water, ammonia or
methane.
Which of the following is not a true statement about the asteroid belt?
a. The asteroid belt occupies the orbit between Mars and Jupiter.
b. It formed from the breakup of a planet.
c. The total mass of the asteroid belt is unlikely to be more than a thousandth of that of
the Earth.
d. All of the above is true. - Correct Answers -b. It formed from the breakup of a planet.
Which of the following is not a true statement about the Kuiper Belt?
a. The Kuiper belt is a great ring of debris similar to the asteroid belt but consisting
mainly of objects composed primarily of ice.
b. It extends between 30 and 50 AU from the sun(beyond Neptune's orbit)
c. The total mass of the Kuiper belt is thought to be greater than that of Earth.
d. All the above are true. - Correct Answers -c. The total mass of the Kuiper belt is
thought to be greater than that of Earth.
What is a hydrogen ion?
a. A hydrogen atom that has lost or gained an electron.
b. A hydrogen atom combined with another hydrogen atom.
c. A hydrogen atom without a proton.
d. A hydrogen atom with two protons. - Correct Answers -a. A hydrogen atom that has
lost or gained an electron.
Heat and Light from our Sun is caused by the fusion of hydrogen into what element?
a. Helium
b. Carbon
c. Oxygen
d. Nitrogen - Correct Answers -a. Helium
What will happen to the Sun after it runs out of Hydrogen?
a. It will explode as a supernova.
b. It will contract into a black hole.
c. It will turn into a red giant and grow so large that it will engulf Mercury, Venus, and
probably Earth.
WITH CORRECT ANSWERS
What lies in the center of the galaxy?
a. a void, like the eye of a hurricane
b. the oldest stars in the galaxy
c. a supermassive black hole
d. the home world of our galactic empire - Correct Answers -c. a supermassive black
hole
Which of the following statements about the solar system are correct?
a. It formed 4.6 billion years ago.
b. At least one of the giant planets are formed of rock and metal like terrestrial planets.
c. The orbits of the major planets range from circular to highly elliptical.
d. All of the above are true. - Correct Answers -a. It formed 4.6 billion years ago.
About what percentage of the Solar System's mass is contained in the Sun?
a. 50%
b. 70%
c. 85%
d. 99.9% - Correct Answers -d. 99.9%
Which of the statements is true?
a. An astronomical unit (AU) is the distance from the Earth to the sun.
b. Jupiter is about 5 AU from the Sun.
c. With a few exceptions, the farther a planet or belt is from the Sun, the larger the
distance between its orbit and the orbit of the next nearer object to the sun.
d. All of the above - Correct Answers -d. All of the above
What is a terrestrial planet?
a. A planet composed mainly of hydrogen and helium gas.
b. A planet composed mainly of ices.
c. A planet composed primarily of silicate rocks or metals.
d. A planet that has not cleared its orbit of other objects. - Correct Answers -c. A planet
composed primarily of silicate rocks or metals.
What is a gas giant?
a. A planet composed mainly of hydrogen and helium gas.
b. A planet composed mainly of ices.
c. A planet composed primarily of silicate rocks or metals.
, d. A planet that has not cleared its orbit of other objects. - Correct Answers -a. A planet
composed mainly of hydrogen and helium gas.
In planetary science, what does the term ice refer to?
a. Compounds with hydrogen
b. Volatile chemical compounds with freezing points above 100k, such as water,
ammonia or methane.
c. Any compound below its freezing temperatures
d. Compounds that are transparent to visible light. - Correct Answers -b. Volatile
chemical compounds with freezing points above 100k, such as water, ammonia or
methane.
Which of the following is not a true statement about the asteroid belt?
a. The asteroid belt occupies the orbit between Mars and Jupiter.
b. It formed from the breakup of a planet.
c. The total mass of the asteroid belt is unlikely to be more than a thousandth of that of
the Earth.
d. All of the above is true. - Correct Answers -b. It formed from the breakup of a planet.
Which of the following is not a true statement about the Kuiper Belt?
a. The Kuiper belt is a great ring of debris similar to the asteroid belt but consisting
mainly of objects composed primarily of ice.
b. It extends between 30 and 50 AU from the sun(beyond Neptune's orbit)
c. The total mass of the Kuiper belt is thought to be greater than that of Earth.
d. All the above are true. - Correct Answers -c. The total mass of the Kuiper belt is
thought to be greater than that of Earth.
What is a hydrogen ion?
a. A hydrogen atom that has lost or gained an electron.
b. A hydrogen atom combined with another hydrogen atom.
c. A hydrogen atom without a proton.
d. A hydrogen atom with two protons. - Correct Answers -a. A hydrogen atom that has
lost or gained an electron.
Heat and Light from our Sun is caused by the fusion of hydrogen into what element?
a. Helium
b. Carbon
c. Oxygen
d. Nitrogen - Correct Answers -a. Helium
What will happen to the Sun after it runs out of Hydrogen?
a. It will explode as a supernova.
b. It will contract into a black hole.
c. It will turn into a red giant and grow so large that it will engulf Mercury, Venus, and
probably Earth.
