Question

1. Lava is the molten magma from ……………………… of the earth’s surface.
2. Like a ………………………, the earth is made up of ……………………… layers.
3. Crust is about ……………………… km on the continental mass and ……………………… km on the
ocean floor.
4. Mantle forms about ……………………… of the earth’s volume.
5. Core has a radius of about ……………………… km and has very high temperature and ………………………
6. Limestone under excessive heat and pressure changes into ………………………

Answer 1

Answer:

1. Lava is actually fiery red molten magma coming out from the interior of the earth on its surface.

2. The earth is made up of three layers: the crust, the mantle and the core.

3. Crust is about 35 km on the continental mass and only 5 km on the ocean floors.

4. Mantle forms about 84% of the earth’s volume.

5. The inner core is a hot, dense ball of (mostly) iron. It has a radius of about 1,220 kilometers (758 miles). Has very high temperature and pressure.

6. Limestone is changed into marble due to extreme heat and pressure

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