Question

define rotation and revolution.?
Ans.??

what is leap year.?
Ans.??

what is different between in summer and winter solstice
Ans.??

what is equinox..​

Answer 1

Answer:

1. A rotation is a circular movement of an object around a center of rotation. The geometric plane along which the rotation occurs is called the rotation plane, and the imaginary line extending from the center and perpendicular to the rotation plane is called the rotation axis.
2. one year in every four, in which February has 29 days instead of 28
3. These are the days when the Sun's path in the sky is the farthest north or south from the Equator. A hemisphere's winter solstice is the shortest day of the year and its summer solstice the year's longest. ... These are the days when the Sun is exactly above the Equator, which makes day and night of equal length.
4. one of the two times in the year (around 20 March and 22 September) when the sun is above the imagined line round the centre of the earth (equator) and day and night are of equal length

Explanation:

hope it helps

Answer 2

Explanation:

DEFINE REVOLUTION AND ROTATION?

Answer : Rotation: The movement of the earth on its axis is called rotation.

Revolution: The movement of the earth around the sun in a fixed path or on an orbit is called Revolution.

QUESTION : What is a leap year?

Answer : A year which has 366 days instead of 365 days is called a leap year. The earth takes 365¼ days to revolve around the sun. But we consider a year as consisting of 365 days only and ignore six hours for the sake of convenience. These six hours saved every year are added to make one day (24 hours) in four years. This additional day is added to the month of February every fourth year. Thus, in this year, February has 29 days instead of 28 days and the year itself has 366 days.

Differentiate between the Summer and Winter Solstice.

Answer:

Summer Solstice

Winter Solstice

1. It is the position of the Earth when the rays of the Sun fall directly on the Tropic of Cancer.

1. It is the position of the Earth when the rays of the Sun fall directly on the Tropic of Capricorn.

2. A large portion of the northern hemisphere experiences more heat and light. Hence, it is summer in the Northern Hemisphere.

2. A large portion of the Southern Hemisphere gets light from the Sun. Hence, it is winter in the Northern Hemisphere.

3. In this position, the North Pole is tilted towards the Sun.

3. In this position, the North Pole is tilted away from the Sun.

4. During this period, days are longer than nights in the Northern Hemisphere.

4. During this period, nights are longer than days in the Northern Hemisphere.

5. It occurs on 21st June in the Northern Hemisphere.

5. It occurs on 22nd December in the Northern Hemisphere.

What is an equinox?

Answer : On 21st March and September 23rd, direct rays of the sun fall on the equator. At this position, neither of the poles is tilted towards the sun. So, the whole earth experiences equal days and equal nights. This is called equinox