Exam Review Chapter 7 Part 2
Earth Science Quiz: Chapter 7 Review
Test your understanding of Earth science with our engaging quiz focused on the key concepts from Chapter 7! This quiz covers important topics such as atmospheric composition, climate change, and planetary characteristics.
Are you ready to challenge your knowledge? Take the quiz now and see how much you know!
Suppose we represent Earth with a basketball. On this scale, most of the air in Earth's atmosphere would fit in a layer that is _________.
About an inch thick
About 6 inches thick
About a half-inch thick
About the thickness of a sheet of paper
Why is the sky blue (on Earth)?
No one knows - this is one of the great mysteries of science
Because molecules scatter blue light more effectively than red light
Because the Sun emits mostly blue light
Because molecules scatter red light more effectively than blue light
Because deep space is blue in color
Which of the following is the most basic definition of a greenhouse gas?
A gas that reflects a lot of sunlight
A gas that keeps warms air from rising, and therefore warms the surface
A gas that absorbs infrared light
A gas that makes a planet much hotter than it would be otherwise, even in small amounts
Which of the following is not a similarity between Earth and Mars?
Both planets have similar day lengths.
Both planets have similar atmospheric pressure.
Both planets have a similar axis tilt and therefore both have seasons.
Both planets have polar caps.
All of the statements below are true. Which one gives the primary reason why the surface of Venus today is some 450°C hotter than the surface of Earth?
Venus has a higher atmospheric pressure than Earth.
Venus is only about 73% as far from the Sun as Earth.
Venus has a much higher reflectivity than Earth.
Venus has a much stronger greenhouse effect than Earth.
What do we mean by a runaway greenhouse effect?
A process that heats a planet like a greenhouse effect, but that involves a completely different mechanism of heating that doesn't actually involve greenhouse gases
A greenhouse effect that starts on a planet but later disappears as gases are lost to space
A greenhouse effect that keeps getting stronger until all of a planet's greenhouse gases are in its atmosphere
A greenhouse effect that heats a planet so much that its surface rock melts
What is the importance of the carbon dioxide (CO2) cycle?
It regulates the carbon dioxide concentration of our atmosphere, keeping temperatures moderate.
It makes the growth of continents possible.
It will prevent us from suffering any consequences from global warming.
It allows for an ultraviolet-absorbing stratosphere.
Earth has been gradually warming over the past few decades. Based on a great deal of evidence, scientists believe that this warming is caused by _____.
Human activities that increase the concentration of greenhouse gases in Earth's atmosphere
The human release of chemicals called CFCs into the stratosphere
The increase in forest fires during recent years
The fact that our politicians spout a lot of hot air
Recent evidence suggests that Mars once had a global magnetic field. Assuming this is true, which of the following could explain why Mars today lacks a global magnetic field like that of Earth?
The Martian core is made of rock, while Earth's core is made of metal.
Mars rotates much slower than the Earth.
Mars's interior has cooled so much its molten core layer no longer undergoes convection.
Mars is too far from the Sun to have a global magnetic field.
Which of the following general statements about Earth's atmosphere is not true?
Without the relatively rare gas called ozone, Earth's surface would be bathed in dangerous ultraviolet light from the Sun.
Gas high in the atmosphere absorbs dangerous X rays from the Sun.
The oxygen in our atmosphere was released by living organisms.
The nitrogen and oxygen in Earth's atmosphere keep the surface pleasantly warm.
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