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Grade 6 Science · Earths Structure

Grade 6 Earths Structure Practice Test

Build Grade 6 Science skills with five 10-question practice tests on Earths layers, the crust, mantle, core, lithosphere, asthenosphere, density, convection, and seismic evidence.

Earths Structure Practice Tests

These Grade 6 Science practice tests help students understand the layers and internal processes of Earth. Students practice the crust, mantle, outer core, inner core, lithosphere, asthenosphere, density, pressure, temperature, convection, the magnetic field, and evidence from seismic waves and volcanic activity.

Skills covered

  • Ordering and comparing Earths internal layers
  • Connecting layer properties with depth, pressure, and temperature
  • Distinguishing the lithosphere and asthenosphere
  • Explaining convection and internal heat
  • Using density and seismic-wave evidence to interpret models
  • Connecting Earths interior with volcanoes, earthquakes, plate movement, and the magnetic field

How to use these practice tests

Begin by identifying the position of the layer or structure in the question. Then compare its state, composition, temperature, density, and role in Earth processes. For evidence questions, remember that scientists use indirect observations such as seismic waves, density, gravity, and volcanic materials to model the deep interior.

For more Grade 6 Science practice, return to the Grade 6 Science category.

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1. Test

Grade 6 Earths Structure Practice Tests

A 10-question Grade 6 Science practice test on Earths layers, the crust, mantle, core, lithosphere, asthenosphere, density, convection, and evidence from seismic waves.

Identify Earths layers, compare their properties, explain heat-driven movement, and use scientific evidence to interpret models of the interior.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

Which layer is the thin, solid outer layer of Earth?

Please select an answer first.

Correct answer: A

The correct answer is The crust.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: The crust is Earths outer rocky layer and is much thinner than the mantle and core.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

The crust is Earths outer rocky layer and is much thinner than the mantle and core.

2. QuestionMultiple choice

Which layer lies directly beneath the crust?

Please select an answer first.

Correct answer: B

The correct answer is The mantle.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: The mantle is the thick layer of hot rock below the crust.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

The mantle is the thick layer of hot rock below the crust.

3. QuestionMultiple choice

Which layer is at the center of Earth?

Please select an answer first.

Correct answer: C

The correct answer is The core.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: The core is the innermost region of Earth and includes the inner and outer core.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

The core is the innermost region of Earth and includes the inner and outer core.

4. QuestionMultiple choice

What is the outer core mainly made of?

Please select an answer first.

Correct answer: D

The correct answer is Liquid metal.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: The outer core is a hot, liquid layer rich in iron and nickel.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

The outer core is a hot, liquid layer rich in iron and nickel.

5. QuestionMultiple choice

What is the inner core mainly like?

Please select an answer first.

Correct answer: A

The correct answer is A solid metal sphere under extreme pressure.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Although it is very hot, pressure at the center keeps the inner core solid.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Although it is very hot, pressure at the center keeps the inner core solid.

6. QuestionMultiple choice

Why is the mantle thicker than the crust?

Please select an answer first.

Correct answer: B

The correct answer is The mantle extends through a much greater depth beneath the surface..

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: The mantle is a very thick layer between the crust and the core.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

The mantle is a very thick layer between the crust and the core.

7. QuestionMultiple choice

Which property generally increases deeper inside Earth?

Please select an answer first.

Correct answer: C

The correct answer is Temperature and pressure.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Pressure and temperature generally rise with increasing depth inside Earth.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Pressure and temperature generally rise with increasing depth inside Earth.

8. QuestionMultiple choice

Why can scientists not directly observe the deepest layers of Earth?

Please select an answer first.

Correct answer: D

The correct answer is The depths are extremely hot, under great pressure, and far below the surface..

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Direct travel to the deep interior is not practical, so scientists use indirect evidence.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Direct travel to the deep interior is not practical, so scientists use indirect evidence.

9. QuestionMultiple choice

Which model would best show the relative locations of Earths layers?

Please select an answer first.

Correct answer: A

The correct answer is A cross-section showing the crust, mantle, outer core, and inner core from outside to inside.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: A cross-section can represent the order and relative positions of the internal layers.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

A cross-section can represent the order and relative positions of the internal layers.

10. QuestionMultiple choice

Why does learning about Earths layers help scientists?

Please select an answer first.

Correct answer: B

The correct answer is Layer properties help explain earthquakes, volcanic activity, and Earths magnetic field..

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Internal structure affects processes that shape the surface and produce geologic phenomena.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Internal structure affects processes that shape the surface and produce geologic phenomena.

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Frequently asked questions about Grade 6 Earths Structure

What topics are covered?

The page covers the crust, mantle, outer core, inner core, lithosphere, asthenosphere, density, pressure, temperature, convection, seismic evidence, volcanic evidence, and the magnetic field.

How do scientists study Earths deep interior?

Scientists use indirect evidence such as seismic waves, density, gravity, laboratory studies, and volcanic materials to build and test models of the interior.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 6 Earths Structure questions in total.