This image shows how magma moves through the Earth’s mantle. Which describes why the magma moves in the direction of the arrows?

The magma is cooled and becomes more dense by the core moving it toward the crust.
The magma is heated and becomes more dense by the core moving it toward the crust.
The magma is cooled and becomes less dense by the core moving it toward the crust.
The magma is heated and becomes less dense by the core moving it toward the crust.

D. The magma is heated and becomes less dense by the core moving it toward the crust.

Explanation:

Closer to the core of the earth is much hotter than near the crust so as the Lava heats up its particles move faster and father apart making it less dense, as the Lava from near the crust cools down it begins to get dense and sinks as the hot magma starts to move up.

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.