Listen to part of a discussion in a history of science class. The class is discussing the heliocentric theory.
- What is the professor’s main purpose in the discussion?
- A. To compare modern and past theories about the solar system
- B. To examine the astronomical research that led to the acceptance of the heliocentric theory
- C. To evaluate changes in seventeenth-century astronomy
- D. To explain why some people resisted the heliocentric theory
- What do the examples of riding a horse and walking represent?
- A. Speeds that people were familiar with
- B. Demonstrations of movement that Galileo used in an experiment
- C. The movement of the planets across the sky
- D. Types of motion that can be felt
- What point does the professor make when he discusses a ride at an amusement park?
- A. That some people thought Earth’s orbit was perfectly round
- B. That people expect to be affected by centrifugal force
- C. That some things can appear to move when they are not moving
- D. That moving at high speeds is not always dangerous
- According to the professor, 400 years ago what was believed to be true about Earth’s atmosphere?
- A. It prevented high-speed motion of objects on Earth.
- B. It would only move if Earth moved.
- C. It was not affected by the motion of the Sun.
- D. It was not held down by any force.
- Why does the professor talk about dropping a matchstick?
- A. To imply that Earth’s equator is not the best place to test the law of gravity
- B. To indicate that the atmosphere affects how fast objects fall
- C. To illustrate how natural it is to have anti-heliocentric beliefs
- D. To identify the inspiration for anti-heliocentrism
- What does the professor mean when he says this: 🎧
- A. Some arguments for heliocentrism made sense to many scientists.
- B. Some reactions to heliocentrism served to refine the theory.
- C. Some arguments against heliocentrism were supported by observation.
- D. Some scientists who rejected heliocentrism accepted it later.
D A B D C C