Q. What causes the change of Seasons?

a) Earth’s rotation and revolution

b) Earth’s revolution

c) Earth’s revolution and inclination of its axis

d) Earth’s rotation and inclination of its Axis.

Answer: c) Earth’s revolution and inclination of its axis

Q. Seasonal changes is caused by which one of special characteristic of Earth’s motion?

a) Revolution around Sun

b) Axial till by 23.5 degree

c) Both (a) and (b)

d) Rotation on its axis

Answer: c) Both (a) and (b)

Q. If the equatorial plane of Earth is not inclined to its orbit, then

a) duration of the year would be longer

b) summer would be warmer

c) there would be no change of seasons

d) winter would be longer

Answer: c) there would be no change of seasons

Q. The greatest seasonal contrast of insolation on the Earth in which of the following latitudinal zones?

a) Equatorial

b) Tropical

c) Temperate

d) Polar

Answer: d) Polar

Q. Which of the following sources is/are used to study Earth’s interior structure?

a) Magma

b) Seismic waves

c) Oceanic minerals

d) Both (a) and (b)

Answer: d) Both (a) and (b)

Q. The waves that help scientists to understand the internal structure of the Earth are

a) primary waves

b) secondary waves

c) surface waves

d) longitudinal waves

Answer: b) secondary waves

Q. Lithosphere consists of

a) upper and lower mantle

b) crust and core

c) crust and uppermost solid mantle

d) mantle and core

Answer: c) crust and uppermost solid mantle

Q. Continental crust is

a) 3 to 10 km thick

b) thinnest at spreading ridges

c) granitic in composition

d) the source of Earth’s magnetic field

Answer: b) thinnest at spreading ridges

Q. Which of the following elements are found in highest and lowest quantities respectively in the curst of the Earth?

a) Oxygen and Silicon

b) Calcium and Sodium

c) Sodium and Magnesium

d) Oxygen and Magnesium

Answer: d) Oxygen and Magnesium

Q. Which of the following scholars suggested the Earth’s origin from gases and dust particles?

a) James Jeans

b) H Alfren

c) F Hoyle

d) O Schmidt

Answer: d) O Schmidt

Q. The Nebular hypothesis of origin of Earth was given by

a) Immanuel Kant

b) Laplace

c) Daly

d) Chamberlain

Answer: b) Laplace

Q. Who among the following modified the Nebular theory of Laplace during mid-19th century?

a) Roche

b)  Chamberlain

c) Morgan

d) Kant

Answer: a) Roche

Q. In terms of its size, the rank of Earth among the planet is

a) 2nd

b) 3rd

c) 4th

d) 5th

Answer: d) 5th

Q. The diameter of Earth is approximately

a) 8,000 km

b) 1,00,000 km

c) 12,800 km

d) None of these

Answer: c) 12,800 km

Q. Which of the following correctly describes the shape of Earth?

a) Spheroid

b) Oblate sphere

c) Geoid

d) All of the above

Answer: d) All of the above

Q. Earth has ………….. types of motion

a) 5

b) 3

c) 1

d) 2

Answer: d) 2

Q. The Earth rotates on its axis in which direction?

a) East to West

b) West to East

c) North to South

d) South to North

Answer: b) West to East

Q. The plane formed by the axis and orbit is known as the …………..

a) Orbital plane

b) Symmetric plane

c) Spherical plane

d) None of the above

Answer: a) Orbital plane

Q. The movement of the Earth on its axis is called as ………..

a) Revolution

b) Axis

c) Rotation

d) None of these

Answer: c) Rotation

Q. How many degrees does the Earth rotate about its own axis in one hour?

a) 15

b) 10

c) 20

d) 24

Answer: a) 15

Q. The Coriolis effect is the result of

a) Pressure gradient

b) Earth’s axis of rotation

c) Earth’s rotation

d) Earth’s revolution

Answer: c) Earth’s rotation

Q. The scientist who first discovered that Earth revolves around the sun was

a) Newton

b) Dalton

c) Copernicus

d) Einstein

Answer: c) Copernicus

Q. At which average speed the Earth revolve around the Sun?

a) 24 Km/sec

b) 30 Km/sec

c) 40 Km/sec

d) 50 Km/sec

Answer: b) 30 Km/sec

Q. The Earth completes one rotation on its axis in

a) 22 h 30 min

b) 23 h 56 min 4.9 sec

c) 24 h

d) 23 h 10 min 2 sec

Answer: b) 23 h 56 min 4.9 sec

Q. The movement of the Earth around the Sun in a fixed path or orbit is called

a) Resolution

b) Circular cycle

c) Revolution

d) Rotation

Answer: c) Revolution

Q. In competing one revolution of the Sun, Earth takes approximately

a) 365 days

b) 365.25 days

c) 365.5 days

d) 365.75 days

Answer: b) 365.25 days

Q. What is the approximate mean velocity with which the Earth moves around the Sun in its orbit?

a) 20 km/s

b) 30 km/s

c) 40 km/s

d) 50 km/s

Answer: b) 30 km/s

Q. The Earth rotates on its axis at an inclination of

a) 23.5o

b) 22.5o

c) 21.5o

d) 20.0o

Answer: a) 23.5o

Q. The causes of day and night is

a) Earth-rotation

b) Rotation of Earth on its axis

c) Tilt of Earth’s axis

d) Moon’s rotation

Answer: b) Rotation of Earth on its axis

Q. Where are day and night equal throughout year?

a) North Pole

b) South Pole

c) Equator

d) Nowhere

Answer: c) Equator

Q. Variations in the length of day time and night time from season to season are due to

a) the Earth’s rotation on its axis

b) the Earth’s revolution round the Sun in an elliptical manner

c) latitudinal position of the plane

d) revolution of the Earth on a tilted axis

Answer: d) revolution of the Earth on a tilted axis