Sure! Here's a version of the answers that's blown up just for 6th graders:
Question: Which sentence is correct about petroleum and natural gas?
Answer: They are found in folded rocks under the ocean floor. It's like finding hidden treasure in the folded pages of a big book!
Question: Which describes an impermeable rock where oil and natural gas deposits are found?
Answer: It's a rock that acts like a strong, waterproof container that traps the oil and natural gas inside, like a super fancy Tupperware!
Question: Oil platforms may be built in the middle of the ocean. How does an oil platform work?
Answer: Picture a really big drill that sits on top of the ocean and pokes a hole in the ocean floor. Then, it sucks up the oil from deep down and brings it up to the surface like a straw!
Question: Which describes the process of injecting fluids into cracks of rocks to recover oil deposits?
Answer: This process is called fracking, which is like tickling the rocks to make the oil come out. It's like tickling someone to make them laugh, but instead, it's rocks and oil!
I hope that helps, 6th graders! Always remember, learning can be fun, so keep asking questions!