Which statement is correct about the movement of plates that sit on top of the mantle? (1 point)
Responses
They never move because they are connected to mountains.
They never move because they are connected to mountains.
They never move because they are connected to Earth’s crust.
They never move because they are connected to Earth’s crust.
They regularly move because of the convection currents of oceans.
They regularly move because of the convection currents of oceans.
They regularly move because of the convection currents of magma.
They regularly move because of the convection currents of magma.
Which statement is correct about the flow of thermal energy inside Earth?(1 point)
Responses
Energy flow inside the crust causes magma to rise.
Energy flow inside the crust causes magma to rise.
Energy flow inside the mantle causes magma to rise.
Energy flow inside the mantle causes magma to rise.
Energy flow inside the crust causes magma to sink deeper.
Energy flow inside the crust causes magma to sink deeper.
Energy flow inside the mantle causes magma to sink deeper.
Energy flow inside the mantle causes magma to rise.
Which is a result of boundary plates colliding or sliding past each other? (1 point)
Responses
earthquakes occur
earthquakes occur
mountains form
mountains form
volcanoes erupt
volcanoes erupt
valleys form
earthquakes occur
The correct statement is: They regularly move because of the convection currents of magma.
The correct statement about the movement of plates that sit on top of the mantle is: "They regularly move because of the convection currents of magma."
To understand why this statement is correct, we need to understand the concept of plate tectonics. The Earth's lithosphere is divided into several large and small plates that float and move on the semi-fluid, underlying asthenosphere of the mantle. These plates interact with each other at their boundaries.
The movement of these plates is driven by convection currents in the mantle. Heat from the Earth's core causes the underlying mantle to heat up. As the mantle heats up, it becomes less dense and rises towards the surface, creating convection currents. These convection currents drag the overlying plates, causing them to move.
The movement of plates at their boundaries has various effects, such as the formation of mountains, the creation of oceanic trenches, the occurrence of earthquakes, and the creation of volcanoes. These geological phenomena provide evidence for the regular movement of plates due to the convection currents in the mantle.
Therefore, the correct answer is: "They regularly move because of the convection currents of magma."