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Published on: 09/09/2019
Motions of the Earth
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Questions + Answers key
Take MCQ Social Science Test
1.
On 23rd September, what season will be in Northern and Southern hemisphere respectively?
Spring and winter
Winter and summer
Autumn and summer
Autumn and spring
2.
On 22nd December, which of the following receives direct rays of the sun?
Tropic of Cancer
Tropic of Capricorn
North Pole
South Pole
3.
We consider a year as consisting of how many days?
366 days
365 days
365 days and 6 hours
364 days
4.
How much time the Earth takes about to complete one rotation around its axis.
24 hours
25 hours
365 days
21 days
5.
The movement of the Earth around the sun is known as
Rotation
Revolution
inclination
6.
On which day the tropic of Capricorn receives direct sun rays?
7.
On which two days the sun rays fall direct on the equator?
8.
When do the shortest night and longest day occur in the Northern hemisphere?
9.
Why do areas near pole receive less heat?
10.
What is orbital plane?
11.
Why does the circle of illumination not coincide with the axis of the Earth?
12.
Define and discuss the significance of rotation and revolution of the Earth.
13.
Compare between axis and orbit.
14.
Why does the whole Earth not get day at the same time?
15.
Explain the importance of leap year.
16.
Make a drawing to show the inclination of the earth.
17.
The rotation of the Earth is responsible for causing day and night. Explain with the proper example?
18.
The Earth takes about ____________ hours to complete one rotation.
19.
Earth has two motions, one is ___________ and ___________.
20.
The axis of the Earth is an ___________ line.
21.
The Earth receives light from ____________.
22.
The motion of the planets around the sun is called __________.
23.
Life is possible in extreme conditions.
24.
The axis of the Earth makes an angle of 23.5° with its orbital plane.
25.
When there is summer in Northern hemisphere, there is winter in Southern hemisphere.
26.
There are five seasons on the Earth mainly.
27.
Days and night are changed because of revolution.
28.
Orbital plane
29.
23rd September
30.
21st March
31.
21st June
32.
22nd December
1.
(d)
Autumn and spring
2.
(b)
Tropic of Capricorn
3.
(b)
365 days
4.
(a)
24 hours
5.
(b)
Revolution
6.
( )
On 22nd December, the tropic of Capricorn receives direct sun rays.
7.
( )
On 21st March and 23rd September, direct rays of the sun fall on the equator.
8.
( )
The shortest night and longest day occur in the Northern hemisphere on 21st June.
9.
( )
The areas near pole receive less heat because the sun rays are slanting at poles.
10.
( )
The Plane formed by the orbit is known as orbital plane.
11.
The circle of illumination does not coincide with the axis of the Earth because of the inclination of the axis by 23 1/2°. The circle of illumination divides day from night and the Earth takes 24 hours to complete one rotation around its axis.
12.
The Earth has two types of motions. one is revolution and other is rotation. Rotation is the movement of the Earth on its axis, while the movement of the Earth around the sun in an orbit (fixed path) is called revolution (second type of motion of the Earth).
The day and night, and season change on the Earth is caused by rotation and revolution respectively.
13.
The comparison between axis and orbit is as follow:
Axis The axis of the Earth is an imaginary line which joins North Pole to South Pole and makes an angle of 66 1/2°. with its orbital plane.
Orbit The Earth moves around the sun in a path which is called orbit and it is an elliptical path.
14.
It is because the rays of the sun are slanting due to the Earth's inclined position and movement of the Earth. The Earth is spherical in shape, so only half of it gets light from the sun at a same time. The portion facing sun experiences day while other portion experiences night.
15.
The movement of the Earth on its axis around the sun takes 365 days (one year) and 6 hours to revolve once around the sun. We ignore six hours for the sake of convenience and consider a year consisting of 365 days. Saved six hours are added to make one day (24 hours) over span of four years.
This surplus day is added to the month of February and in every fourth year, February is of 29 days in spite of 28 days.
16.
17.
The Earth rotates from West to East on its axis. The Earth takes about 24 hours to complete one rotation around its axis. The period of rotation is known as the earthday. The spherical shape of the Earth allows only one half of the Earth to receive sunlight at a time.
The portion facing the sun experiences day, while the other half away from the sun experiences night. It is because of the rotation of the Earth that allows day and night following each other regularly.
18.
( )
24
19.
( )
rotation, revolution
20.
( )
imaginary
21.
( )
sun
22.
( )
revolution
23.
(b)
24.
(b)
25.
(a)
26.
(b)
27.
(b)
28.
( )
66 1/2° angle
29.
( )
Sun rays fall directly on equator
30.
( )
Equinox
31.
( )
Summer solstice
32.
( )
Winter solstice
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