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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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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

What is the lithosphere?

Please select an answer first.

Correct answer: A

The correct answer is The rigid outer layer made of the crust and uppermost mantle.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: The lithosphere is the strong outer shell that is broken into tectonic plates.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

The lithosphere is the strong outer shell that is broken into tectonic plates.

2. QuestionMultiple choice

What is the asthenosphere?

Please select an answer first.

Correct answer: B

The correct answer is A softer, slowly flowing layer beneath the lithosphere.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: The asthenosphere can flow slowly and allows plates above it to move.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

The asthenosphere can flow slowly and allows plates above it to move.

3. QuestionMultiple choice

What are tectonic plates?

Please select an answer first.

Correct answer: C

The correct answer is Large pieces of the lithosphere that move over the asthenosphere.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Tectonic plates are rigid sections of the lithosphere that move slowly.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Tectonic plates are rigid sections of the lithosphere that move slowly.

4. QuestionMultiple choice

What can cause movement in the mantle?

Please select an answer first.

Correct answer: D

The correct answer is Heat from inside Earth creates slow movement in hot, softer material..

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Heat differences can produce convection in the mantle, contributing to plate movement.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Heat differences can produce convection in the mantle, contributing to plate movement.

5. QuestionMultiple choice

What is convection?

Please select an answer first.

Correct answer: A

The correct answer is The transfer of heat by movement in a fluid or slowly flowing material.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Convection moves warmer material and cooler material in circulating patterns.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Convection moves warmer material and cooler material in circulating patterns.

6. QuestionMultiple choice

Why does warmer mantle material tend to rise?

Please select an answer first.

Correct answer: B

The correct answer is It becomes less dense than the cooler material around it..

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Heating can make material expand and become less dense, allowing it to rise.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Heating can make material expand and become less dense, allowing it to rise.

7. QuestionMultiple choice

How can mantle convection affect the surface?

Please select an answer first.

Correct answer: C

The correct answer is It can contribute to the movement of tectonic plates..

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Movement in the mantle can transfer forces to the plates above it.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Movement in the mantle can transfer forces to the plates above it.

8. QuestionMultiple choice

Which layer is most closely associated with the movement of tectonic plates above it?

Please select an answer first.

Correct answer: D

The correct answer is The asthenosphere.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: The asthenosphere is softer and can flow slowly beneath the rigid lithosphere.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

The asthenosphere is softer and can flow slowly beneath the rigid lithosphere.

9. QuestionMultiple choice

Why are tectonic plates described as moving slowly?

Please select an answer first.

Correct answer: A

The correct answer is Their movement is usually measured over years and is only a few centimeters per year..

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: Plate motion is gradual, even though its effects can accumulate over long periods.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

Plate motion is gradual, even though its effects can accumulate over long periods.

10. QuestionMultiple choice

What is a useful scientific model of plate motion?

Please select an answer first.

Correct answer: B

The correct answer is A model showing rigid plates above a slowly circulating, heated layer.

  1. Identify the Earth structure: Determine which layer, boundary, or internal process is described.
  2. Connect properties and position: This model connects the properties of the lithosphere and asthenosphere with heat-driven motion.
  3. Check the evidence: Use depth, composition, density, temperature, or motion evidence to confirm the answer.

This model connects the properties of the lithosphere and asthenosphere with heat-driven motion.

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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.