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12 Questions

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Earth's Structure and Composition

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Questions and Answers

What is the Earth's structure composed of?

Only solids

Only solids and liquids

Only liquids and gases

Solids, liquids, and gases (correct)

What is the purpose of the Moho discontinuity?

To separate the lithosphere from the asthenosphere

To separate the outer core from the inner core

To separate the continents from the oceans

To separate the crust from the mantle (correct)

What is the temperature range in the mantle?

Up to 20 000°C

Up to 5 000°C (correct)

Up to 10 000°C

Up to 1 000°C

What is the composition of the outer core?

A combination of nickel (Ni) and iron (Fe) Signup and view all the answers

Why is the inner core solid?

Due to extremely high pressures Signup and view all the answers

What is the thickness of the continental crust?

6-9 km Signup and view all the answers

What is the rock cycle defined as?

The ongoing process of making, breaking down and remaking any one type of rock to recreate another type Signup and view all the answers

How do sedimentary rocks change into metamorphic rocks?

Through high pressure and temperature Signup and view all the answers

What is the characteristic of granite?

Very hard and contains large crystals Signup and view all the answers

What happens to sediments deposited by wind, water, and ice?

They are compressed into sedimentary rocks Signup and view all the answers

What is the process that breaks down rocks exposed at the surface?

Weathering Signup and view all the answers

What happens to magma that rises through the crust?

It cools and crystallizes into new igneous rock Signup and view all the answers