unit 3 quiz

How does an increase in pressure affect the density of rocks?

• causes them to heat up and sink

• causes them to cool and rise

• increases the density

• decreases the density

Which is true in regards to matter and temperature?

• materials will sink when they are hot; rise when they are cold

• materials that are cold are under more pressure than materials that are warm

• materials that are the hottest are found near the surface

• materials expand when heated; shrink when cooled

Which is true regarding temperature and density?

• in materials that are cooled, the volume increases while the mass stays the same

• in materials that are heated, the volume increases while the mass stays the same

• in materials that are heated, density decreases due to loss of mass

• in materials that are cooled, temperature rises due to increased volume

What is happening to the plates when mantle material cools and sinks?

• they converge

• they spread apart

• they subduct

• they will remain motionless

How do the lithospheric plates affect (play a role in) mantle convection?

• they do not affect mantle convection

• by melting into the upper mantle

• by heating up, contracting, and rising

• by sliding away from the mid-ocean ridges

Why do scientists think that material at the center of the earth should be the densest?

• due to decreased temperatures

• due to increased temperatures

• due to increased pressures

• due to decreased surface area

  due to decreased surface area

What happens to lithospheric plates where mantle material is rising?

• the converge

• they subduct

• they spread apart

• they will remain motionless

How do convection currents begin?

Responses

• material is cooled and sinks

• material is heated and rises

• material is caught in a mantle plume

• all

How does gravity help in the process of mantle convection?

• helps continental crust float

• helps pull oceanic crust downward

• keeps the mid-ocean ridge stationary

• releases pressure at the rift valley

Which of the following best describes heat transfer by convection?

• transfer of heat in a fluid

• transfer of heat in the form of waves

• transfer of heat by direct contact

• transfer of heat using magnetism