question: Write a question you would see in a school textbook. OPTIONS:
- The distance between Earth and the Sun is increasing.
- The tilt of Earth on its axis is constantly changing.
- Earth is revolving around the Sun.
- Earth is rotating on its axis.
answer: Jessica watches the Sun set in the evening sky. What causes the setting of the Sun?

question: Write a question you would see in a school textbook. OPTIONS:
- the migration patterns of birds
- the periodic climate changes of Earth
- the large variety of animals on each continent
- the similarity of fossils on different continents
answer: The theory of continental drift states that the land masses called continents were once closer together and have drifted apart over time. Which circumstance is the strongest evidence in support of this theory?

question: Write a question you would see in a school textbook. OPTIONS:
- The light from the cities makes it hard to see stars.
- The noise from the cities vibrates the telescopes.
- The power lines from the cities produce interference waves.
- The pollution from the cities reflects starlight.
answer:
Why are many telescopes used far from cities?