19. Why do some countries have more than one time zone?
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20. Why do the temperate zones have moderate temperatures?
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21. Why is the region south of the Equator known as the Southern Hemisphere?
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22. Why does the earth take one hour to cross 15º of longitude?
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23. Why does the Torrid Zone receive maximum amount of heat?
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Answers
Answer:
19)As Earth rotates, different parts of Earth receive sunlight or darkness, giving us day and night. As your location on Earth rotates into sunlight, you see the sun rise. ... Since different parts of Earth enter and exit daylight at different times, we need different time zones.
20)Unlike torrid zone where sun rays fall directly on the equatorial region, in temperate region sun rays do not fall directly thus making its climate moderate.
21)The Southern Hemisphere is the half (hemisphere) of Earth that is south of the Equator. ... Owing to the tilt of Earth's rotation relative to the Sun and the ecliptic plane, summer is from December to February (inclusive) and winter is from June to August (inclusive).
22)The time difference can be used to calculate longitude. This is because the Earth takes 24 hours for a complete 360o rotation. So in one hour, the Earth rotates through 1/24 of 360o, or 15o. Therefore, for each hour of time difference between two locations, there is a 15o difference in longitude.
23)The mid-day sun directly faces the area between the Tropics of Cancer and Capricorn. So the heat received is maximum at these latitudes. These latitudes fall under the Torrid Zone.