Question

which processes produced heat that contributed to the formation of earths different layers? check all that apply.
collision of materials
compaction of materials
cooling of low - density metals
radioactive decay
sinking of high - density metals

Explanation:

• Collision of materials: When materials collided during Earth's formation, kinetic energy was converted into heat.
• Compaction of materials: As materials were compressed together, heat was generated due to the pressure.
• Radioactive decay: Unstable radioactive isotopes decay and release heat as a by - product.
• Sinking of high - density metals: The movement of high - density metals (like iron) towards the center of the Earth (a process called differentiation) involved friction and release of gravitational potential energy as heat.
• Cooling of low - density metals: Cooling is a process of heat loss, not heat production.

Answer:

collision of materials, compaction of materials, radioactive decay, sinking of high - density metals