Question

Q.1 Fill in the Blanks:
1. The Magma coming out of volcanoes from the earth's interior is______
2._____waves travel through the interior of the earth.
3.Our earth was formed approximately ____years ago
4. The thickness of the earth crust on an average is______
5. The density of continental crust is is_____
6._____ the second layer of the crust.​

Answer 1

Answer:

1) lava

2) seismic wave

3) 4.54 billion years ago (approx.)

4) 15 to 20 km

5) 2.83 g/cm³

6) mantle