Formation of the Earth

Q.

What is the radius of the Earth?

1. 6317 km

2. 6370 km

3. 6371 km

4. 6731 km

Q. The core forms approximately _______ per cent of the earth's volume.

1. one
2. twenty
3. fifteen
4. eighty-four

Q. Radius of earth is approximately _____.

1. 6, 200 km
2. 6, 400 km
3. 6, 000 km
4. 6, 500 km

Q. The thinnest layer of the earth is ____________.

1. crust
2. mantle
3. inner core
4. outer core