Please help me with the following questions.
1. As the mantle heats up due t the heat from the core, it begins to rise. Why does this happen?
A. Because density is increasing as temperature increases
B. Because density is decreasing as temperature increses
C. Because mass is increasing as temperature increases
D. Because mass is increasing as temperature decreases
2. Once the mantle nears the crust, it will cool and _______ because density increases.
A. Stay in it's place
B. Rise
C. Move to the right
D.Sink
1. B
I'm not sure what 2 is.
To answer these questions, let's first understand the concepts involved.
1. The mantle is a layer of the Earth's interior located between the outer core and the crust. It is mostly solid rock but can behave like a slow-moving fluid over long periods of time due to its high temperature and the pressure it experiences.
As the mantle heats up due to the heat from the core, it begins to rise. This happens because of a phenomenon called thermal expansion. When a substance, like the mantle, is heated, its particles gain energy and become more energetic, causing them to move apart and increase their volume. As a result, the density of the heated mantle decreases.
Based on this understanding, we can determine that the answer to question 1 is:
B. Because density is decreasing as temperature increases.
2. Once the mantle nears the crust, it will cool down. Cooling causes particles to lose energy and decrease their movement. As a result, the substance contracts, reducing its volume and increasing its density.
Given that density increases when the mantle cools down near the crust, we can deduce that the answer to question 2 is:
D. Sink