During the formation of metamorphic rocks, what leads to increased heat? Check all that apply. A. Sun warms rocks. B. Magma pockets rise. C. Friction occurs between sliding rocks. D. Lava at Earth's surface flows over rocks. E. Rocks beneath Earth's surface are forced toward the mantle.

B. Magma pockets rise. C. Friction occurs between sliding rocks E. Rocks beneath Earth's surface are forced toward the mantle.

Explanation:

The metamorphic rocks are those that are formed by the heat and the pressure and that transforms the existing rocks when the hot magma comes into contacts with them and thus they undergo a metamorphism and the friction along the faults is also one of the cases that over the rocks deep in the earth.

Option (B), (C) and (E)

Explanation:

Metamorphic rocks are usually defined as those rocks that are formed due to the increasing heat and pressure conditions. Here, pressure and temperature are the two main key factors that control the formation of this type of rock. For example, Marble, Quartzite, and Schist.

The main reason behind this increasing heat condition includes-

When plates move over one another, mostly in the region of the convergent plate boundary, and also in the region where the rocks slide over one another, then there occurs friction. Due to this, some amount of heat is released, which enhances the formation of metamorphic rocks. When the rocks are forced towards the mantle in the zone of subduction in a convergent plate boundary, the rocks undergo changes due to the variations in terms of temperature. These conditions lead to the alteration of rocks and form metamorphic rocks. Rising of the magma pockets (magma chamber) can also lead to the changing of one rock type into a metamorphic rock, as it releases a large amount of heat outward, that allows the rock to experience high temperature.

Thus, the correct answers are options (B), (C) and (E).