47. Ozone is a. 0 b. 02 c. 03 d. 04 48. Heating of the Thermosphere is due to a.

Question

47. Ozone is a. 0 b. 02 c. 03 d. 04 48. Heating of the Thermosphere is due to a. Solar ultraviolet radiation interaction with Ozone. b. Solar ultraviolet radiation interaction with light elements like H and He c. Solar ultraviolet radiation interaction with CO2. d. the Earth's magnetic field. 49. The Moho is the boundary between a. The outer core and the mantle b. The lithosphere and the asthenosphere c. The ocean crust and the continental crust d. The crust and the mantle 50. The angle of repose of sand is a. 64° b. 54° C. 44 d. 34 51. (4 pts). The oldest rocks found on Earth are age was determined using the radioactive decay of what element to what element? years old and their 52. Which feature does not have gravel-sized material in it? a. Kame b. Esker c. Moraine d. Drumlin 53. The highest stream velocity occurs when the stream s a. Farthest from its base level b. In high mountain streams c When it arrives at its respective base level. d. At the mid-point or equilibrium point of a stream . A kettle is formed by a. sediment being deposited around a remnant block of ice b. dissolution of limestone c. the cutoff of a stream in a meander loop. d. pioneers who left cooking materials behind

Explanation / Answer

1. c) O3, chemical formula of ozone is O3.

2. a) Solar ultraviolet radiation intraction with ozone.

3. d) the crust and the mantle.

4. d) 34 degree, angle of repose of dry sand is 34 degree and that of dry sand is 15-20 degree.

6. c) Moraine, moraine is found in glaciers and normally consist of somewhat rounded particles ranging in size from large boulders to minute glacial flour.

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