Shield Volcanoes on Venus
Listen to part of a lecture in an astronomy class.
- What is the lecture mainly about?
- A. Conclusions about the surface of Venus drawn from recent observations.
- B. The different types of volcanoes that have been found on Venus.
- C. Similarities between geologic processes on Venus and on other planets.
- D. New methods used to observe the surface of Venus.
- How were scientists able to learn new information about Venus’ surface?
[CHOOSE 2 ANSWERS]
- A. More powerful telescopes allowed astronomers to see more surface details.
- B. Satellites were used to get radar images of Venus’ surface.
- C. Space modules sent photographs after landing on Venus.
- D. A space probe was able to locate gaps among Venus’ clouds.
- What differences between volcanoes on Venus and those on Earth does the professor mention?
[CHOOSE 2 ANSWERS]
- A. Volcanoes on Venus are mostly shield volcanoes.
- B. Volcanoes on Venus emit thicker lava.
- C. Many volcanoes on Earth are concentrated in specific zones.
- D. Many volcanoes on Earth show no volcanic activity.
- Why does the professor mention the fact that Venus has no surface water?
- A. To give an example of a discovery that was unexpected.
- B. To illustrate the consequences of intense volcanic activity.
- C. To question a theory about the origin of shield volcanoes.
- D. To suggest an explanation for why Venus does not have moving tectonic plates.
- According to the professor, what is a possible origin of Venus’s clouds?
- A. Gases released as a result of volcanic activity.
- B. Chemical reactions caused by high surface temperatures.
- C. Bursts of radio energy from the plane’s surface.
- D. Strong winds that blow dust into the atmosphere.
- What is the professor’s opinion about the theory that Venus’ volcanoes are active?
- A. The theory has recently been proved by direct observation.
- B. At least two kinds of evidence support the theory.
- C. The data collected so far about the theory are contradictory.
- D. New findings have made the theory quite unlikely.