Explain the following terms: 1.Tundra 2.Neap tides 3.Stratosphere 4.Exosphere
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Answer:
1 tundra, a major zone of treeless level or rolling ground found in cold regions, mostly north of the Arctic Circle (Arctic tundra) or above the timberline on high mountains (alpine tundra). ... One constant factor shaping the tundra is alternate freezing and thawing of the ground.
2.A neap tide—seven days after a spring tide—refers to a period of moderate tides when the sun and moon are at right angles to each other. ... During full or new moons—which occur when the Earth, sun, and moon are nearly in alignment—average tidal ranges are slightly larger. This occurs twice each month.
3.The stratosphere is a layer of Earth's atmosphere. It is the second layer of the atmosphere as you go upward. ... The bottom of the stratosphere is around 10 km (6.2 miles or about 33,000 feet) above the ground at middle latitudes. The top of the stratosphere occurs at an altitude of 50 km (31 miles).
4.The exosphere is the uppermost region of Earth's atmosphere as it gradually fades into the vacuum of space. The air in the exosphere is extremely thin - in many ways it is almost the same as the airless void of outer space.