The Earth (Our Solar System Sub-Unit)

What are the primary components of Earth's inner core?

• Oxygen and Silicon

• Iron and Nickel

• Nitrogen and Hydrogen

• Liquid rock

How does the Earth's mantle behave over long geological periods?

• It behaves like a solid, preventing any movement.

• It behaves like a liquid, flowing rapidly.

• It behaves like a very thick, hot plastic, allowing slow flow.

• It is a rigid, unmoving layer.

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What is the primary function of Earth's magnetic field?

• To regulate the planet's temperature.

• To protect the atmosphere from solar wind.

• To cause volcanic eruptions.

• To create ocean currents.

Which gas makes up the largest percentage of Earth's atmosphere by volume?

• Oxygen

• Argon

• Carbon Dioxide

• Nitrogen