Question

MULTIPLE CHOICE QUESTIONS: 1.day and night are caused by
a) The earth revolving around the Sun
b) The moon revolving around the earth
c) The earth rotating on its axis.
2. Rotation means:
a) Moving up and down
b) Move in a circular orbit around another
object
c) Spinning around and around.
3. The earth's axis is tilted at angle of..............
with the plane of the earth's
orbit.
a) 90° b) 66.5°
c) 23.5°
4. The time taken by the earth to complete
one rotation on its axis
a) 1 year
b) 1 month. c) 1 day
5. Revolution causes
a) 24 hours. b) day and night c) seasons
6. 21st June is the longest day in the
a) Northern Hemisphere
b) Southern hemisphere
cl Regions near the equator
​

Answer 1

Answer:

1. Day and night are caused by - (c) The earth rotating on its axis.

2. Rotation means - (c) Spinning around and around.

3. The earth's axis is tilted at an angle - (c) 23.5°

4. The time taken by the earth to complete

one rotation on its axis? - 24 hours

Explanation:

1. The Earth orbits the sun once every 365 days and rotates about its axis once every 24 hours. Days and nights are due to the Earth rotating on its axis, not its revolution around the sun. The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.

2. Rotation is the action of rotating about an axis or center.

3. Today, the Earth's axis is tilted 23.5 degrees from the plane of its orbit around the sun. But this tilt changes. During a cycle that averages about 40,000 years, the tilt of the axis varies between 22.1 and 24.5 degrees.

4. The South Pole is the other point where Earth's axis of rotation intersects its surface, in Antarctica. Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes, and 4 seconds with respect to other, distant, stars.

Answer 2

Answer:

1. c) The earth rotating on its axis
2. b) Move in a circular orbit around another object
3. c) 23.5°
4. c) 1 day
5. c) seasons
6. b) southern hemisphere