FREE SCIENCE AND STUDY GAMES ABOUT FINAL FOR

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FREE SCIENCE AND STUDY GAMES ABOUT FINAL FOR

ASTRONOMY EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

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-Guarantee passing score -208 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: According to our present theory of solar system formation, which of the following lists the major ingredients of the solar nebula in order from the most abundant to the least abundant?

Answer:

hydrogen and helium gas; hydrogen compounds; rock; metal Question 2: Which of the following is not caused by the Coriolis effect on Earth?

Answer:

Water going down a drain swirls in opposite directions in the northern and southern hemispheres Question 3: ased on its surface temperature of 5,800 K, what color are most of the photons that leave the Sun's surface?

Answer:

Green Question 4: Does Venus have auroras around its poles, like the Earth? Why or why not?

Answer:

No, because it lacks a global magnetic field.

Question 5: Sunsets are red because

Answer:

sunlight must pass through more atmosphere then, and the atmosphere scatters even more light at bluer wavelengths, transmitting mostly red light.

Question 6: What drives the motion of the tectonic plates on Earth?

Answer:

convection cells in the mantle Question 7: Which of the following is not a characteristic of the seasons on Mars?

Answer:

As on Earth, the seasons are caused primarily by axis tilt and orbital distance has virtually no effect.

Question 8: What is Charon?

Answer:

Pluto's Moon Question 9: Why are there fewer large impact craters on the Earth's seafloor than on the continents?

Answer:

Seafloor crust is younger than continental crust, so it has had less time in which to suffer impacts Question 10: Based on its surface features, the most important event on Venus in the past billion years or so was _______.

Answer:

a global "repaving" that erased essentially all the surface features that had existed earlier Question 11: Which planet(s) have an atmosphere that consists mostly of carbon dioxide?

Answer:

Venus and Mars

Question 12: What is the difference between weather and climate?

Answer:

Weather refers to short-term changes in wind, rain, and temperature, while climate refers to the long-term average of weather.

Question 13: All the statements below are true. Which one gives the primary reason why the surface of Venus today is some 450C hotter than the surface of Earth?

Answer:

Venus has a much stronger greenhouse effect than Earth.Question 14: The terrestrial planets are made almost entirely of elements heavier than hydrogen and helium. According to modern science, where did these elements come from?

Answer:

They were produced by stars that lived and died before our solar system was born.

Question 15: Why does Mars have more extreme seasons than Earth?

Answer:

because it has a more eccentric orbit in addition to its tilt Question 16: What makes us think that Mars must once have had an atmosphere that was warmer and had higher surface pressure?

Answer:

The atmosphere is too cold and thin for liquid water today, yet we see evidence of flowing water in the past.

Question 17: A terrestrial world's lithosphere is ________.

Answer:

a layer of relatively strong, rigid rock, encompassing the crust and part of the mantle Question 18: Which internal energy source is the most important in continuing to heat the terrestrial planets today?

Answer:

radioactivity Question 19: Uranus and Neptune have methane clouds but Jupiter and Saturn do not. Which factor explains why?

Answer:

Temperatures on Jupiter and Saturn are too high for methane to condense.

Question 20: According to our theory of solar system formation, which law best explains why the central regions of the solar nebula got hotter as the nebula shrank in size?

Answer:

The law of conservation of energy

Question 21: The size and shape of a planet's orbit can be determined by

Answer:

The doppler technique

Question 22: The ionosphere is a layer of ionized gas that is

Answer:

within the thermosphere.Question 23: The major processes that heat the interiors of the terrestrial worlds are:

Answer:

1) Heat deposited as the planets were built from planetesimals; (2) heat deposited as the planets underwent differentiation; (3) heat released by radioactive decay Question 24: Based on all we know about the terrestrial worlds, what single factor appears to play the most important role in a terrestrial planet's geological destiny?

Answer:

its size Question 25: What do we mean by the period of heavy bombardment in the context of the history of our solar system?

Answer:

The first few hundred million years after the planets formed, which is when most impact craters were formed.

Question 26: What is Jupiter's Great Red Spot?

Answer:

a long-lived, high-pressure storm