The sun‘ s energy provides us with all EXCEPT__________.
A.rain
B.teal
C.water
D.light
A.rain
B.teal
C.water
D.light
We experience different forms of the sun' s energy every day.The sun is the major source ofenergy for our planet.It causes the evaporation (蒸发) of water from the oceans and lakes.Sun-light also provides the energy used by green plants to make their own food.
Much of the energy that comes from the sun never reaches the earth' s surface.It is either re-fleeted or absorbed by the gases in the upper atmosphere.Of the energy that reaches the lower at-mosphere, 30% is reflected by clouds or the earth' s surface.The remaining 70% warms the surfaceof the planet, causes water to evaporate, and provides energy for the water cycle and weather.
Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.
Many gases found in the atmosphere actually reflect heat energy escaping from the earth' s sur-face back to the earth.These gases act like the glass of a greenhouse in that they allow energy fromthe sun to enter but prevent energy form. leaving.They are therefore called greenhouse gases.
When sunlight strikes an object, some of the energy is absorbed and some is reflected.Theamount reflected depends on the surface.Dark-colored surfaces, such as dark soil or forest, absorbmore energy.
According to the passage, the root cause for weather changes on the earth is __________. 查看材料
A.the atmosphere surrounding the earth
B.water from oceans and lakes
C.energy from the sun
D.greenhouse gases in the sky
Coal, oil, natural gas, and all other fuels are stored energy from the sun. Some was collected by this season's plants as carbon compounds. Some was stored by plants and trees ages ago. Even waterpower derives from the sun. Water turned into vapor by the sun falls as rain. It courses down the mountains and is converted to electric power. Light transmits only the energy that comes from the sun's outer layer, and much of this energy that is directed towards the earth never arrives. About nine tenths of it is absorbed by the atmosphere of the earth. In fact, the earth itself gets only one half millionth of the sun's entire output of radiant energy.
The sun is the source of all of the following EXCEPT______.
A.gasoline
B.natural gas
C.atomic power
D.animal fat
A.one tenth
B.one millionth
C.all that comes from the surface of the sun
D.a very small portion
A.occasionally
B.consequently
C.successively
D.subsequently
A.of
B.with
C.for
D.at
M:__________
A.Saying sorry won" t be enough for being late. You have to account for what you" ve done.
B.That" s all right. Please sit down and I" 11 start to ask you a few questions.
C.You needn" t saying sorry. It" s often the case.
D.Put on your name in the attendance record and go to your work.
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