Inside Our Earth

Consider the following statements:
1. The deepest mine in the world is in South Africa.
2. It is 16 km deep.
Which of the above mentioned statements is/are correct?

Consider the following statements:
1. The uppermost layer over the earth\’s surface is called the crust.
2. It is about 15 km. on the continental masses and only 5 km. on the ocean floors.
Which of the above mentioned statements is/are correct?

Consider the following statements:
1. The main mineral constituents of the continental mass are silica and magnesium.
2. The oceanic crust mainly consists of silica and alumina.
Which of the above mentioned statements is/are correct?

Consider the following statements:
1. The layer beneath crust is mantle.
2. The mantle forms only 15 per cent of the volume of the earth.
Which of the above mentioned statements is/are correct?

Consider the following statements:
1. The innermost layer of the earth\’s surface is the core.
2. It is mainly made up of nickel and iron and is called nife.
3. The central core has very high temperature and low pressure.
Which of the above mentioned statements is/are correct?

Consider the following statements:
1. ‘Igneous’ is derived from Latin word ‘Ignis’ meaning fire.
2. ‘Sedimentary’ is derived from Latin word sedimentum meaning settle down.
3. ‘Metamorphic’ is derived from Latin word ‘metamorphose’ meaning change of form.
Which of the above mentioned statements is/are correct?

Consider the following statements:
1. Igneous rocks are called primary rocks.
2. Granite is an example of extrusive igneous rocks.
3. The molten lava cooled on the earth\’s surface forms extrusive igneous rocks.
Which of the above mentioned statements is/are correct?

Consider the following statements:
1. The molten lava cooled inside the earth\’s crust forms intrusive igneous rocks.
2. Basalt is an example of intrusive igneous rocks.
Which of the above mentioned statements is/are correct?

Consider the following statements:
1. The sediments compressed and hardened forms sedimentary rocks.
2. These rocks may also contain fossils of plants, animals and other microorganisms.
3. Sandstone is an example of sedimentary rocks.
Which of the above mentioned statements is/are correct?

Consider the following statements:
1. Igneous and sedimentary rocks can change into metamorphic rocks under great heat and pressure.
2. The change of limestone into marble is an example of metamorphic rocks.
Which of the above mentioned statements is/are correct?