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प्रश्न
What are aphelion and perihelion?
उत्तर
The Earth’s axis is always inclined at a fixed angle of 66 1/2° to the plane of the ecliptic. When the Earth is farthest from the Sun (152 million km) it is aphelion. When the Earth is nearest the Sun (147 million km) it is perihelion.
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संबंधित प्रश्न
Name the two chief motions of the earth.
Define ‘revolution’.
State two chief characteristics of the revolution of the earth.
What is the effect of the inclined axis of the earth on day and night?
Explain with the help of a diagram how the tilt of the earth’s axis and the revolution cause
- seasons.
- variation in the length of day and night; and
- changes in the altitude of the midday sun at different times of the year.
How much time does the Earth take for one revolution?
How is that the opposite seasons are found in Australia and India?
Account for the unequal length of day and night.
What is period of revolution?
What are the effects of revolution?
