Thermal convection movement in the upper mantle A) generates ...

[ericka1]

Thermal convection movement in the upper mantle
 
  A) generates the electric current that powers Earth's magnetic field.
  B) greatly influences Earth's surface features.
  C) heats Earth's core by frictional forces.
  D) is usually negligible.

Question 2

Earth's core is probably composed of
 
  A) silicate minerals.
  B) aluminum oxides.
  C) an iron-nickel alloy.
  D) calcium magnesium sulfate.

[yahahah24021]

Answer to Question 1

Answer: B

Answer to Question 2

Answer: C

[ericka1]

Thanks for the timely response, appreciate it

[JaynaD87]

Excellent