Author Question: Why do scientist refer to Earth's mantle as a plastic? a. The mantle has the properties of a ... (Read 113 times)

NClaborn · **on:** Jul 27, 2018

Why do scientist refer to Earth's mantle as a plastic?

a. The mantle has the properties of a solid, but can flow under pressure.
b. The mantle has the mixed properties of a solid and a liquid.
c. The mantle frequently shifts between its states of matter.
d. The mantle is a softer solid as it approaches the core.
e. The mantle has the properties of a liquid, but is limited in its movement.

Question 2

The age of a star cluster can be approximated by finding its turnoff point in the distribution of data points that represent stars on the H-R Diagram.

a. True
b. False
Indicate whether the statement is true or false