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Questions and Answers

Which layer of the Earth's internal structure is responsible for generating the Earth's magnetic field?

The solid mantle

The highly viscous asthenosphere

The outer silicate solid crust

The liquid outer core (correct)

What is the main method used to understand the internal structure of Earth?

Observations of rock in outcrop

Samples brought to the surface from greater depths by volcanoes or volcanic activity

Analysis of the seismic waves that pass through Earth (correct)

Observations of topography and bathymetry

How can astronomers calculate Earth's mass?

By analyzing the seismic waves that pass through Earth

By observing the motion of orbiting satellites (correct)

By conducting experiments with crystalline solids at high pressures and temperatures

By measuring the force exerted by Earth's gravity

What is the solid inner core of Earth made of?

Iron Signup and view all the answers

What is the average density of Earth?

Higher than that of water Signup and view all the answers

Which layer of the Earth's internal structure is highly viscous?

Solid mantle Signup and view all the answers

What generates the Earth's magnetic field?

Liquid outer core Signup and view all the answers

What can be used to calculate Earth's mass?

Measuring the force exerted by Earth's gravity Signup and view all the answers

What can help scientists understand the internal structure of Earth?

Analyzing seismic waves Signup and view all the answers

What is the outermost layer of the Earth's internal structure?

Solid crust Signup and view all the answers