Earth & Space Science

Earth & Space Science

About This Project
Ch 1 – Our Place in the Universe
Ch 2 – Understanding the Sky
Ch 3 – How Science Discovered the Earth
Chapter 4 – Planet Earth
Chapter 5 – Earth Through Time
Chapter 6 – Air and Water
Chapter 7 – Human Impact on the Climate

Teachers — We need your feedback! This free, online textbook is an experimental project (see About this Project), and we need to hear from you about whether you believe it is worth our continued time and expense to keep the project going. Please tell us what you think of it, how it works with your students, whether you think it is worth continuing, and if so, what we can do to improve it. You may email any and all feedback directly to lead author Jeff Bennett, jeff@bigkidscience.com. Note: This project is being funded by the lead author. Your purchases of Dr. Bennett’s books on the Big Kid Science site therefore help to support this project.

2.2 Review

Chapter Review Quiz

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1. Question
1. What is the basic reason that we have seasons on Earth?
- A. Earth’s orbit is not quite a perfect circle.
- B. The amount of energy put out by the Sun varies over the course of each year.
- C. Earth’s axis is tilted relative to Earth’s orbit around the Sun.
- D. Earth’s distance from the Sun varies over the course of each year
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Question 2 of 7

2. Question
2. On the June solstice, Earth’s axis points in the direction of the star Polaris. Where does it point on the December solstice?
- A. It still points toward Polaris, and does so throughout the year.
- B. Toward the star Vega.
- C. Toward the Southern Cross.
- D. There is no axis tilt at the December solstice.
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Question 3 of 7

3. Question
3. On what date(s) does the Sun rise exactly due east and set exactly due west?
- A. It depends on your latitude.
- B. On the dates of the March and September equinoxes.
- C. On the June solstice.
- D. On the December solstice.
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Question 4 of 7

4. Question
Questions 4 to 6 refer to the following diagram:

4. Which position in this diagram represents the date when people in the continental United States experience the longest amount of daylight and see the Sun go highest through the midday sky?
- A. Position 1
- B. Position 2
- C. Position 3
- D. Position 4
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Question 5 of 7

5. Question
5. Which position in this diagram represents the beginning of spring for Australia and South Africa?
- A. Position 1
- B. Position 2
- C. Position 3
- D. Position 4
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Question 6 of 7

6. Question
6. Which position in this diagram represents the date on which the most direct sunlight falls on the Southern Hemisphere?
- A. Position 1
- B. Position 2
- C. Position 3
- D. Position 4
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Question 7 of 7

7. Question
7. Suppose you discover a planet orbiting another star in an orbit very much like Earth’s orbit around the Sun. What else you would need to know about this planet in order to determine whether or not it has seasons?
- A. Its mass and size
- B. Its rotation rate
- C. Its axis tilt
- D. Whether it has a moon
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Short Essay Response

Type your answers in the box provided then print the page or take a screenshot and print OR email to your teacher.

1. Suppose someone tries to tell you that seasons occur because Earth is sometimes closer to the Sun and sometimes farther. What evidence could you present to demonstrate that their claim is not the correct explanation for seasons?
type your response here...
2. Briefly explain how seasons in equatorial regions differ from seasons at mid-latitudes.
type your response here...

Learning Goal Summary

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1. Question
Look back at the Learning Goal questions at the beginning of this section. For each of those questions, write the question followed by a few sentences that briefly summarize the answer to it.
- This response will be reviewed and graded after submission.
Grading can be reviewed and adjusted.

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