Question

question 24(multiple choice worth 3 points)
(03.02 lc)
which layer of earths mantle is the hottest?
asthenosphere
atmosphere (not a part of mantle)
lithosphere
mesosphere

question 25(multiple choice worth 3 points)
(03.03 lc)
what type of plate boundary interactions take place when tectonic plates slide past each other?
convergent boundaries
divergent boundaries
subduction boundaries
transform boundaries

Explanation:

• Question 24: The mesosphere is the lower part of the mantle. As we go deeper into the Earth, the temperature generally increases. The mesosphere is deeper than the asthenosphere and lithosphere (which are upper - mantle related layers), so it is hotter. The atmosphere is not part of the mantle.
• Question 25:
• Convergent boundaries involve plates moving towards each other (one may be subducted).
• Divergent boundaries are where plates move apart.
• Subduction boundaries are a type of convergent boundary where one plate is forced under another.
• Transform boundaries are where plates slide past each other.

Answer:

• Question 24: Mesosphere
• Question 25: Transform boundaries