Question 1. At a constant density, thicker objects "floating" in the fluid-like mantle are compensated less than thinner objects. Select one: True False Question 2 Differences in the extent of mantle melting result in different final chemical compositions of the crust due to partial melting of different compounds. Select one: True False Question 3 Which of the following processes is caused by the spreading of tectonic plates? Select one: a. Hot active upwelling b. Passive upwelling c. Cold downwelling.

1. Question 1. At a constant density, thicker objects "floating" in the fluid-like mantle are
compensated less than thinner objects.
Select one:
True
False
Question 2 Differences in the extent of mantle melting result in different final chemical
compositions of the crust due to partial melting of different compounds.
Select one:
True
False
Question 3
Which of the following processes is caused by the spreading of tectonic plates?
Select one:
a. Hot active upwelling
b. Passive upwelling
c. Cold downwelling