Which statement is correct about the flow of thermal energy inside Earth?
A. Energy flow inside the crust causes magma to rise
B. Energy flow inside the mantle causes magma to rise
C. Energy flow inside the mantle causes magma to sink deeper
D. Energy flow inside the crust causes magma to sink deeper
B. Energy flow inside the mantle causes magma to rise
B. Energy flow inside the mantle causes magma to rise
To determine the correct statement about the flow of thermal energy inside the Earth, let's analyze each option:
A. Energy flow inside the crust causes magma to rise: This statement suggests that the flow of thermal energy in the crust is responsible for magma rising. Magma typically rises due to the heat transfer from the mantle to the crust, so this statement seems plausible.
B. Energy flow inside the mantle causes magma to rise: This option proposes that the flow of thermal energy in the mantle leads to the rise of magma. Since the mantle is hotter than the crust, it is more likely to generate the necessary heat to cause magma to rise, making this a possible choice as well.
C. Energy flow inside the mantle causes magma to sink deeper: This statement contradicts our understanding of magma behavior. The mantle's heat promotes the upwelling of magma rather than causing it to sink deeper, so this option is unlikely.
D. Energy flow inside the crust causes magma to sink deeper: Similarly to option C, this statement goes against our knowledge of how magma behaves. The crust typically acts as a layer where the magma rises rather than sinks deeper, making option D less likely.
Based on this analysis, both options A and B appear to be accurate. To determine the correct statement, we need to consider the primary mechanism responsible for magma rising. In this case, option B is more precise since the mantle's heat transfer to the crust creates an upward force, causing magma to rise. Therefore, the correct statement is B: Energy flow inside the mantle causes magma to rise.