Fill in the blanks
i) _____ is used to understand the
concept of day and night.
Answers
Answer:
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Answer:
Globe is used to understand the concept of day and night.
Explanation:
We experience day and night alternately. Early morning, we see that the Sun rises in the east and sets by twilight in the west always. During the night, we then see the stars move slowly towards east to west direction also. Actually, the Sun and the stars do not move around us! The Earth is the one moving around the Sun.
The Earth’s rotation is like your favourite spinning toy top. The pointed tip that goes through the middle of the top is the top’s axis. Similarly, the Earth has an axis but it is not straight up. This is because the Earth is not spinning upright. The Earth is slightly tilted or leaning on its side by 23.5O degrees while spinning toward the East.
Sunlight falls only on one side of the Earth. This side of the planet will be experiencing daylight. Because the Earth is rotating, the opposite side of the Earth away from the Sun will be experiencing night. After some time, the part of the Earth experiencing daylight will experience night. Rotation of the Earth causes night and day to alternate.
Since we learned that the Earth’s axis is tilted and hence the equator is not facing the Sun directly, different places on Earth would experience unequal length of days and nights—not exactly 12 hours of day and 12 hours of night all the time.
Different places in the Earth experiences different lengths of night and day. The 12 hours of day and 12 hours of night happens only in places near the equator, for example the Philippines. Arctic and Antarctic experience polar day when the Sun stays above the horizon for more than 24 hours and polar night when night lasts for more than 24 hours.