2. What causes the Earth to be warmer according to the video clip?
A: The atmosphere.
B: The greenhouse gases.
C: The sunbeams.
D: The radiation from the outer space.
A: The atmosphere.
B: The greenhouse gases.
C: The sunbeams.
D: The radiation from the outer space.
举一反三
- 中国大学MOOC: 2. What causes the Earth to be warmer according to the video clip?
- The method in which the greenhouse effect takes place is by A: gamma radiation from the earth is absorbed into the atmosphere by particulates B: beta radiation from the Sun is absorbed by water vapor C: ultraviolet radiation from the Sun is absorbed by ozone D: infrared radiation from the Earth's surface is absorbed by multiple gases in the atmosphere E: cosmic radiation from deep space is absorbed by gases in the atmosphere
- The accumulation of greenhouse gases (GHGs) causes global warming by letting sunlight into the atmosphere as _______. Then, when the earth re-radiates the heat back to space, the gases trap the energy in the form of outgoing ______. A: visible light, ultraviolet radiation B: infrared radiation, ultraviolet radiation C: ultraviolet radiation, infrared radiation D: infrared radiation, radio waves
- According to the lectures, what good can the greenhouse effect bring to the earth? （ ） A: It helps the earth to keep warm so that it would not be too cold to support life. B: It helps the pants to get more oxygen. C: It helps the earth to keep regular rotation. D: It shields the radiation from the outer space.
- 35）There seems to be no debate about the ________ that the world will be warmer and warmer if we keep pumping large amounts of greenhouse gases into the atmosphere.