Geography
Meteors are rocks from outer space. They hold special significance for scientists because
- they contain radioactive materials.
- the earth is made of same materials.
- they give an idea of other planets.
- they pass through the atmosphere of earth.
Related Questions
The molten material thrown up by volcanoes rises to the surface of the earth from the ……………. .
- Magnum chamber
- Magma chamber
- Magnum
- Magma
The earth is made up of several concentric layers. The correct order of the layers from the centre to the surface is
- Crust — Mantle — Core
- Core — Mantle — Crust
- Mantle — Crust — Core
- Mantle — Core — Crust.
Name the two broad divisions the earth crust is divided depending on chemical composition.
- Lithosphere, hydrosphere
- SIAL, SIMA
- Core, Mantle
- Crust, Asthenosphere
Study the figure on the right and complete the analogy:
Continents : SIAL :: …………… : SIMA
- Mountains tops
- Ocean floor
- Plains
- Volcanoes