Select the best answer. Which statement is true about all convection currents?
A. It results to formation of valleys and hills
B. It causes earthquakes
C. It happen in all layers of the Earth
D. It is made possible by heat and pressure
C. It happens in all layers of the Earth
C. It happen in all layers of the Earth
To determine the correct answer, we can go through each option one by one and identify whether it is true about all convection currents:
A. It results in the formation of valleys and hills: This statement is not true about all convection currents. Convection currents primarily occur in fluids, such as liquid or gas, and their movement usually takes the form of circular patterns rather than forming valleys and hills.
B. It causes earthquakes: Convection currents are not the direct cause of earthquakes. Earthquakes are typically the result of tectonic plate movements and interactions, such as when plates collide or slide past each other along fault lines.
C. It happens in all layers of the Earth: This statement is true about all convection currents. Convection currents can occur in various layers of the Earth, including the lower mantle, upper mantle, and even the Earth's atmosphere.
D. It is made possible by heat and pressure: This statement is true about all convection currents. Convection currents arise due to the transfer of heat energy within a fluid, resulting in a difference in temperature and density. This temperature and density variation leads to the movement of the fluid, creating convection currents.
Considering the explanations above, the best answer to the question is:
C. It happens in all layers of the Earth