Author Question: Suppose Venus were moved to Earth's orbit. Would it still have a runaway greenhouse effect? A) ... (Read 61 times)

crobinson2013 · **on:** Jul 27, 2018

Suppose Venus were moved to Earth's orbit. Would it still have a runaway greenhouse effect?

A) Yes, because its water molecules dissociated and hydrogen was blown away by the solar wind, so there is no way to re-make its water.
B) Yes, because the Earth's orbit isn't that much farther, and we are experiencing global warming.
C) No, it is much cooler where the Earth is, so Venus would also cool down and eventually regain its riverbeds.
D) There is no way to know.

Question 2

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

A) the increase in forest fires during recent years.
B) human activities that are increasing the concentration of greenhouse gases in Earth's atmosphere.
C) the human release of chemicals called CFCs into the stratosphere.
D) the fact that our politicians spout a lot of hot air.