of CO2 concentrations 23. Prior to the industrial revolution in the 1800s, the a
ID: 296835 • Letter: O
Question
of CO2 concentrations 23. Prior to the industrial revolution in the 1800s, the averag percent have CO2 was about 280 ppmv. By approximately increased from their pre-industrial value? a, 4096 b. 3596 ed from their p rein C. 25% d. 2096 e. 15% b' The figure above shows a calm day with clouds (a), a calm day without clouds (a),a calm night with clouds (b), and a calm night without clouds (b). Questions 24 through 27 are based on the figure 24. If the surface above a and a' are covered with grass (and all other factors are the same), on which surface is temperature most likely to be higher a. a b. a C. temperature would be the same on both surfaces d. none of the above 25. Would the albedo of the earth-atmosphere system most likely be greater in a or a. Greater in a b. Greater in a c. The albedo values would be the same for both surfaces d. None of the above 26. Would the surface air temperature most likely be higher in b or b' a. higher in b b. higher in b c. about the same d. none of the aboveExplanation / Answer
Answer 23: Since the industrial revolution, the concentration of Carbon dioxide has increased by 40% owing to the heavy fossil fuel burning, deforestation and other natural and man-made causes of Co2 emission.
Hence the answer is: a. 40 %
Answer 24:
Answer is a’ (the second option) surface will have higher temperature. Clouds actually reflect back some of the heat that comes from the sun. This means that less heat from the sun is received by the surface of the earth in figure a as compared to figure a’.
Answer 25:
Albedo is the ability of a surface to reflect the light that falls on it. A darker surface can absorb more light (reflect less light) and has less Albedo. A lighter surface can reflect more light and has a higher Albedo. Albedo is actually measured in percentage- meaning how much percentage of the incident light does the surface reflect.
Since the surface itself is uniform, the answer here is: c.The Albedo value would be the same for both surfaces.
Answer 26: During night time, the earth is giving up heat from its surface. Hence when there is cloud cover at night, a part of the heat is reflected back to the earth’s surface by the cloud. Hence at night, the earth’s surface air temperature will be higher on a cloudy night that on a clear night.
Hence the answer is: a.higher in b
Answer 27: Infrared radiation is directly proportional to how hot the object of its source is. The hotter the object, the higher is the Infrared radiation emitted by that object.
Hence the surface of a’ will emit the most infrared radiation. Hence answer is option b.
Fun fact- the cool thing about Infrared radiation is that it propagates in waves and does not need particles. Hence it can travel though even vacuum!
Note: answering this is confusing for readers. The answer is option b which is a’.
Answer 38:
Usually, naming the direction means that the wind is coming from that direction. E.g. south winds means the wind is moving from south to north. So in this case, the wind will be moving from east to west (since you are standing on the west of the smokestack and the smoke is passing over your head).
Hence answer is b. East
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