Question

1. How are the seasons caused?
2. What are the spring and autumn equinoxes?
3. Explain the position of the Earth during summer solstice with t
help of a diagram.
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Answer 1

Answer:

1) Earth has seasons because its axis is tilted. Earth's axis is always pointed in the same direction, so different points of earth get the Sun's direct rays throughout the years.

2) Day and night approximately have the same length. Autumnal equinoxes are near 22 September. The spring equinox is the first day of spring season and occurs when the sun passes the equator moving from the southern to the northern hemisphere. The northern pole begins to lean towards the sun again.

3) For part of our orbit the northern half of earth is tilted towards the sun. This is summer in northern hemisphere; there are longer periods of daylight, the sun is higher in the sky, and the Sun's rays strike the surface more directly, gives us warmer temperatures. The north pole is in constant daylight.