题目内容
（请给出正确答案）
The sun's energy provides us with all EXCEPT _______.
A．rain
B．teal
C．water
D．light
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更多“The sun's energy provides us w…”相关的问题
The sun' s energy indirectly provides the earth with ______.
A．fuels
B．waterpower
C．light
D．both A and B
Of the sun's total output of radiant energy, the earth receives______.
A．one tenth
B．one millionth
C．all that comes from the surface of the sun
D．a very small portion
Coal, oil, natural gas, and all other fuels are stored-up energy from the sun. Some was collect ed 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 layers, and much of this energy that is directed toward 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-billionth of the sun' s entire output of radiant energy.
All the useful energy at the surface of the earth comes ______.
A．directly from the sun
B．from the sun' s activity
C．from energy stored by the sun
D．from radiation of the sun
Which of the following statements in supported by the passage？
A．The sun shines constantly and gives out the same amount of energy every year．
B．The cause of the sun’S fluctuations is its loss of energy with each passing year
C．It is sure that the energy sent out by the sun will drop when more sun spots appear．
D．Fluctuations in weather pattems are the results of the pull of gravity．
In order to support this argument, the writer gives the example that ______ .
A．a machine using solar energy efficiently has already been developed
B．the sun is our final source of power
C．man uses only a tiny part of the sun's energy
D．the part of the sun's energy we use is used indirectly
Which of the following statements is supported by the passage？
A．The sun shines constantly and gives out the same amount of energy every year.
B．The cause of the sun' s fluctuations is its loss of energy with each passing year.
C．It is sure that the energy sent out by the sun will drop when more sun spots appear.
D．Fluctuations in weather patterns are the results of the pull of gravity.
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
The sun is the source of all of the following EXCEPT______.
A．gasoline
B．natural gas
C．atomic power
D．animal fat
How much energy given off by the sun reaches the earth？
A．100 % but indirectly
B．5 %
C．0.5
D．only a very tiny amount
The source of the sun' s inconstancy is magnetism. Professor William Livingston has developed new theories about its magnetic nature.
"We don' t yet know what causes sun spots, "he says, "but we now think they ' re areas of high level magnetism that come up from the sun' s interior. So strong is their magnetic pull that the highly ionized gas nearby is not able to transmit energy out. "As a result these areas send out less heat and light and thus appear from Earth to be almost dark irregular surface patches.
Sun spot activity generally fluctuates in steady, 11-year cycled. Scientists have long formed the o pinion that as the size and number of sun spots increased, the overall energy sent out by the sun would de crease. Indeed, recent studies confirmed it, revealing that during peak periods of sun spot activity, the Earth experiences a small drop that can be seen clearly in received solar energy.
Could such a small drop in energy have an effect here on earth？ Perhaps some scientists think the world temperature could fall by' as much as 0.2 during periods of high solar magnetism.., enough to cause significant fluctuations in weather patterns.
According to the passage, it is believed that the sun ______ ．
A．moves in a quick but steady way year after year
B．sends out less and less heat and light with each passing year
C．radiates the same amount of light every year
D．might have a strong influence on the weather patterns
