Question: If chemical weathering of iron in rock causes rust, then rust of iron in rocks is a direct result of? Answer choices: - solar heating - high speed fall from space - Chemical energy - The area was once underwater - permineralization - Temperature - volcanic ejection - chemical weathering
Answer: chemical weathering

Question: If movement of tectonic plates causes the ground to shake, then the ground shakes as a result of the movement of what? Answer choices: - Earth's core - Electrical energy - tectonic plates - kinetic energy - vehicles - electromagnetic energy - earth - magnetics
Answer: tectonic plates

Question: If aswitch is used to complete an electrical circuit, then what is a purpose of a switch in an electrical circuit? Answer choices: - to reduce magnetic effects - heat production - to annihilate electrons - preventing heat transfer - direct energy - to complete the circuit - heat is produced - to circumvent resistors
Answer:
to complete the circuit