What's Driving The Plates?

What is the formula for density?

• D=m/v

• D=v/m

• D=mv

• D=mv/2

Select the layers of the Earth in order of increasing density?

• inner core, outer core, mantle, crust

• crust, mantle, outer core, inner core

• crust, mantle, inner core, outer core

• mantle, crust, core

Which statement correctly states the relationship between depth in the Earth and pressure?

• As depth increases, pressure decreases.

• As depth increases, pressure stays constant.

• As depth increases, pressure increases.

• There is no relationship between depth and pressure.

Which statement correctly states the relationship between depth in the Earth and temperature?

• As depth increases, temperature decreases.

• As depth increases, temperature increases.

• As depth increases, temperature remains constant.

• There is no relationship between depth and temperature.

Which statement correctly states the relationship between depth in the Earth and density?

• As depth increases, density remains constant.

• As depth increases, density decreases.

• As depth increases, density increases.

• There is no relationship between depth and density.

What type of motion does a primary (P) wave have?

• shear (side to side)

• perpendicular to the direction of movement

• circular

• parallel to the direction of movement

What type of motion does a shear (S) wave have?

• Compressional

• Longitudinal (push/pull)

• perpendicular to the direction of motion

• parallel to the direction of motion

What is this image showing?

• The Shadow Zone

• The Shady Zone

• The Shaded Zone

• The Sus Zone

Why does the Shadow Zone occur?

• P waves can travel through all states of matter.

• P waves cannot pass through the core.

• S waves cannot pass through the liquid outer core.

• S waves shear to the side.

How do we know the inner core is solid?

• The velocity of the P wave changes in different states of matter.

• The P wave is able to cancel out S waves.

• The S waves cannot pass through liquid.

• The velocity of the S wave changes to 0.0.