During the formation of metamorphic rocks, what leads to increased heat? check all that apply.

sun warms rocks.
magma pockets rise.
friction occurs between sliding rocks.
lava at earth’s surface flows over rocks.
rocks beneath earth’s surface are forced toward the mantle.

Explanation:

Magma pockets rise.

Rising magma pockets are the chief heat source that drives contact metamorphism. Hot magma making its way into higher crustal levels raises the temperature of country rocks to a point where metamorphic change is induced.

Friction occurs between sliding rocks.

Frictional sliding of rocks can yield substantial frictional heat for a rock to undergo metamorphic change. As rocks begins to slide into deeper crustal levels, a geothermal gradient is set up and heat from within the earth can lead to change in rock.

magma pockets rise

rocks beneath earth's surface are forced toward the mantle

Explanation:

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e