Question

1. Volcanic activity and earthquakes are common near the margins of plates. Wh
F Fill in the blancs.
1. The ...... is the sphere of life.
2. ...... waves help to determine the structure of the earth.
3. The average thickness of the earth's crust is about ...... km.
4. In spite of its high temperature, the innermost part of the earth's core is
igneous rocks are formed on the surface of the earth.
6. is a sedimentary rock formed by the decay of plant and animal remains that
7. Limestone is to marble what ...... is to slate.
8. Fold mountains are formed by processes.
9. Blocks of rock pushed up along a rift form ...... mountains and sunken blocks
G. State whether the following statements are true or false.
1. The core lies between the crust and the mantle
2. Basalt is an intrusive igneous rock.
3. Petroleum is found in sedimentary rocks.
4. An island may be the top of a volcanic cone rising from the sea floor.
5. The plates of the lithosphere float on the soft layer of the mantle.
6. The word 'tectonic' comes from a Greek word which means 'builder.
H. Choose the correct options. More than one option may be correct.
1. Which of the following is not a component of the physical environment?​

Answer 1

Answer:

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Answer 2

Answer:

give the question one by one