The Earth

Q1.How many layers of earth are there?

Q2.Earth's speed around the sun

None of these

30 km/s

40 km/s

50 km/s

Q3.Duration of rotation

23.9

23.8

23.7

23.4

Q4.Why is there a bulge at the equator?

Earth's spin

Effect of gravity

None of these

Both

Q5.Radius of Earth

3959

3000

3900

4000

Q6.Temperature of earth's core

5200

5500 C

5000 C

4500 C

Q7.Duration of revolution

365.1

365,3

365.25

365

Q8.How old is the Earth?

6 billion years

2 billion years

3 billion years

4.5 billion years

7 billion years

4 billion years

Q9.Average temperature of earth's surface

15

14

16

13

Q10.Earth's tilt

23.1

23.4

23.3

23.5

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