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FREE AND STUDY GAMES ABOUT ASTRONOMY EXAM
QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -63 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: 67. Which of these is not a characteristic of the solar nebula theory?
Answer:
Larger planets should form closer to their star, where there is more debris.Question 2: 112. In what scenario is the blue component of incoming sunlight is scattered much more than any other color component?
Answer:
when the sun is high in the sky Question 3: 121. What can we conclude about the structure of Earth's interior knowing that the average density of Earth is higher than the average density of the rock on the continents and seafloor?
Answer:
that Earth's most dense material must be beneath the surface Question 4: 96. Mercury's most unusual orbital feature, as compared to the other planets, is
Answer:
the shape of its orbit.
Question 5: 108. A region where a denser basaltic plate is subducted under a continental one is:
Answer:
the Nazca Trench.Question 6: 93. In order to determine the mass of a planet by applying Newton's laws of motion and gravity, the planet must have
Answer:
moons
Question 7: 125. Without the greenhouse effect operating in our atmosphere
Answer:
Earth would have an average temperature of -23 degrees Celsius.Question 8: 77. The Kuiper Belt is:
Answer:
a band of icy planetesimals found beyond Neptune's orbit Question 9: 120. Which parts of the Sun's radiation are responsible for heating Earth's surface?
Answer:
the visible and the infrared Question 10: 76. Which characteristic listed below describes the jovian planets?
Answer:
low density Question 11: 111. In noting that our world is "differentiated," we mean that:
Answer:
the iron and nickel core is denser than the silicate mantle and crust.Question 12: 79. What factor caused different planets to form out of different types of material?
Answer:
The variation in temperature throughout the solar nebula; the higher the temperature, the lower the percentage of light elements in the forming planet.
Question 13: 78. The Kuiper Belt is found where in the solar system?
Answer:
beyond the orbit of Neptune Question 14: 100. Our best close-up views of the jovian moons came from the many passes by:
Answer:
Galileo.Question 15: 83. The average density of each planet in the solar system is determined by taking its mass and dividing that by its
Answer:
volume
Question 16: 75. As a rotating gas cloud contracts, it spins
Answer:
faster due to conservation of angular momentum.
Question 17: 71. Which of the following is not icy in composition?
Answer:
asteroids Question 18: 99. A gravitational "sling-shot":
Answer:
changes the speed and direction of a spacecraft nearing a massive planet.Question 19: 68. Our understanding of the solar system has come in a way that can best be
described as:
Answer:
explosive, with us learning more in the past few decades than in all previous history.
Question 20: 123. Why is the sky blue?
Answer:
the atmosphere scatters the light from the Sun
Question 21: 102. What is the process of accretion?
Answer:
growth of an object by the accumulation of matter Question 22: 122. Earth's magnetic field:
Answer:
prevents charged particles in the solar wind from reaching the surface.Question 23: 116. The principal greenhouse gases in our present atmosphere are:
Answer:
water vapor and carbon dioxide.Question 24: 74. The Kuiper Belt is an "outer asteroid belt" consisting of what types of solar system bodies?
Answer:
icy cometlike bodies Question 25: 105. When water vapor condenses out at the cool tops of convection cells, what happens?
Answer:
Clouds form
Question 26: 82. Which of these bodies has the lowest density?
Answer:
a comet Question 27: 109. The relative size of the atmosphere layer as compared to the solid part of Earth is most similar to
Answer:
the skin of a grape as compared to the meat of the grape.Question 28: 89. Planetary orbits:
Answer:
are almost circular, with low eccentricities
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