Review 1: Earth's Interior (Intro to Plate Tectonics)

Earth's Interior Layers

Multiple Choice

Which of the following best describes a change one would observe in moving from Earth's crust downward to the outer core?

• Pressure would change from very high to none

• Density would change from least to most dense

• Plasticity would change from flexible to rigid

• Heat would change from relatively hot to cool

Categorize

Options (10)

Medium Density

Semi Solid

A mix of Silicon, Oxygen, Iron, and Magnesium

Highest Density

Close to highest density

Molten Iron and Nickel

Solid Iron and Nicke

Lowest Density

Solid

Silicon, Oxygen, and Aluminium

Associate the correct properties with the correct layer of the Earth

Mantle

Outer Core

Inner Core

Crust

Multiple Choice

Which is the best description of the characteristics of the asthenosphere?

• Rigid layer with no convection currents
• Layer composed of only liquid rock
• Semi-fluid layer beneath the lithosphere where convection currents occur
• Solid layer above the lithosphere

Multiple Choice

Predict the consequences of a significant change in the convection currents within the Earth's mantle.

• The Earth's magnetic field would disappear.

• The rate of tectonic plate movement would change, potentially increasing volcanic and earthquake activity.

• The Earth's rotation would slow down.

• The atmosphere would become more turbulent.