🌍 Interior of the Earth

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Quiz Description
This quiz on Interior of the Earth contains 30 multiple-choice questions (MCQs), each carrying 1 mark. The questions are designed to test knowledge about the Earth’s structure, including the crust, mantle, core, rocks, minerals, discontinuities, and the rock cycle. It is suitable for students preparing for geography exams and for anyone interested in understanding the composition and layers of our planet.

Name

1. The science which deals with the structure of the Earth is called:

a) Geography

b) Geology

c) Meteorology

d) Seismology

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2. The scientists who study the Earth’s structure are called:

a) Astronomers

b) Volcanologists

c) Geologists

d) Meteorologists

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3. The Earth was formed around:

a) 2 billion years ago

b) 3 billion years ago

c) 4 billion years ago

d) 5 billion years ago

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4. The Earth’s crust is thickest on:

a) Ocean floors

b) Continental masses

c) The mantle

d) The inner core

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5. Average thickness of the Earth’s crust on continents is about:

a) 5 km

b) 10 km

c) 35 km

d) 70 km

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6. The oceanic crust is mainly made up of:

a) Sial (Silicon + Aluminium)

b) Sima (Silicon + Magnesium)

c) Iron + Nickel

d) Aluminium + Potassium

None

7. The continental crust is called:

a) Sial

b) Mantle

c) Core

d) Sima

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8. The main element present in the Earth’s crust is:

a) Magnesium

b) Silicon

c) Oxygen

d) Iron

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9. Which layer lies just below the crust?

a) Mantle

b) Core

c) Lithosphere

d) Hydrosphere

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10. The mantle extends to a depth of about:

a) 1000 km

b) 2000 km

c) 2900 km

d) 3500 km

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11. The average temperature of the upper mantle is about:

a) 200°C

b) 870°C

c) 1500°C

d) 2000°C

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12. The boundary between the crust and mantle is called:

a) Mohorovicic Discontinuity

b) Gutenberg Discontinuity

c) Lehmann Discontinuity

d) Seismic Boundary

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13. The boundary between the mantle and the core is known as:

a) Lehmann Discontinuity

b) Gutenberg Discontinuity

c) Seismic Gap

d) Crustal Line

None

15. The outer core is in which state?

a) Solid

b) Gas

c) Semi-solid

d) Liquid

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16. The thickness of the outer core is about:

a) 1200 km

b) 2300 km

c) 2900 km

d) 3500 km

None

17. The thickness of the inner core is about:

a) 500 km

b) 1200 km

c) 2300 km

d) 3500 km

None

18. Rocks are made up of:

a) Fossils

b) Metals

c) Gases

d) Minerals

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19. Which type of rock is formed by cooling of magma?

a) Igneous

b) Sedimentary

c) Metamorphic

d) Fossiliferous

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20. Granite and Basalt are examples of:

a) Sedimentary rocks

b) Igneous rocks

c) Metamorphic rocks

d) Fossil rocks

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21. Sandstone and Limestone are examples of:

a) Igneous rocks

b) Artificial rocks

c) Metamorphic rocks

d) Sedimentary rocks

None

22. Gneiss and Marble are examples of:

a) Igneous rocks

b) Sedimentary rocks

c) Metamorphic rocks

d) Fossil fuels

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23. Sedimentary rocks are also called:

a) Primary rocks

b) Stratified rocks

c) Volcanic rocks

d) Plutonic rocks

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24. Which type of rocks often contain fossils?

a) Sedimentary rocks

b) Igneous rocks

c) Metamorphic rocks

d) All of these

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25. Which rock is formed when limestone changes under heat and pressure?

a) Slate

b) Quartzite

c) Marble

d) Schist

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26. Which metamorphic rock is formed from sandstone?

a) Quartzite

b) Marble

c) Slate

d) Diamond

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27. Which metamorphic rock is formed from shale?

a) Gneiss

b) Schist

c) Quartzite

d) Slate

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28. Which type of rock is called “Primary Rock”?

a) Metamorphic

b) Sedimentary

c) Igneous

d) Fossil rock

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29. The continuous transformation of rocks from one type to another is called:

a) Rock mining

b) Rock erosion

c) Rock cycle

d) Rock deposition

None

30. Which among the following is a non-metallic mineral?

a) Gold

b) Silver

c) Sulphur

d) Iron

None

1 out of 3

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🌍 Interior of the Earth

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