Question

question 8(multiple choice worth 6 points)
(03.03 lc)
which of the following statements explains the theory of plate tectonics established in the 1960s?
heat in earths mantle causes lithospheric plates to move.
heat in earths mantle causes mesospheric plates to move.
cooler magma rises in earths mantle, causing lithospheric plates to move.
cooler magma sinks in earths inner core, causing mesospheric plates to move.

Explanation:

The theory of plate tectonics states that the Earth's lithosphere is divided into tectonic plates. Heat in the Earth's mantle (through convection currents) causes these lithospheric plates to move. The mesosphere is part of the atmosphere (not related to tectonic plates). Also, it is hotter magma that rises (not cooler) in the mantle. And the inner core is solid and not directly involved in plate movement in the way described in the incorrect options.

Answer:

Heat in Earth's mantle causes lithospheric plates to move.