give geographical reasons for each of the following
earth is a habitable planet. why?
from space earth look blue? why?
water bodies reduce the day and night temperature variations? why?
Answers
Answer:
1). It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
2). Water blocks the radiation of white light (sunlight). In reality, the sunlight looks white from a mixture of lights of many different colors. As illumination enters the water, the water consumes white light and reflects just blue light, lights of all colors. The earth from space, thus, looks blue.
3). During the day time due to the heat of the sun large amount of water evaporate and the temperature is also high but during night the temperature is cool and so the water is cold.
Explanation:
1. It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
2. The earth is largely (71 percent of the surface of the earth) covered by water. ... As illumination enters the water, the water consumes white light and reflects just blue light, lights of all colors. The earth from space, thus, looks blue.
3.A decrease of the top temperature increases the water density in that layer, which is responsible for the growth of a mixing layer of uniform density. In the course of the night the temperature of the mixing layer decreases gradually and, as a consequence, the depth of the mixing layer also increases.