1. As the mantle heats up due to 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 increases.**
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 the density increases.
A. Stay in its place**
B. Rise
C. Move to the right
D. Sink
1. correct
2. correct.
Thank you
To answer question 1, we need to understand the relationship between temperature and density. As the temperature of a substance increases, its density tends to decrease. This is because the molecules or particles within the substance gain more energy and move faster, causing them to spread out, thus decreasing the density. Therefore, the correct answer is B. Because density is decreasing as temperature increases.
To answer question 2, we can also apply the same relationship between temperature and density. As the mantle nears the crust, it starts to cool down. Cooling the mantle causes its temperature to decrease, which leads to an increase in density. Since denser substances tend to sink, it means that the cooled mantle will sink or move downwards. Therefore, the correct answer is D. Sink.
Both of these answers can be determined by understanding the basic principles of temperature, density, and how they affect the movement of materials within the Earth's layers.