Question

Which sentence is correct about petroleum and natural gas?

A. they are found in rock folds underneath the ocean floor.

B. they exist in the solid slate.

C. they are formed in low-pressure conditions.

D. they are found through strip mining.
Answer
Which describes an impermeable rock where oil and natural gas deposits are found?

A. it has pores large enough to allow absorption.

B. it is made up of porous materials.

C. it traps the deposits inside them.

D. it only allows certain materials to pass through.
Answer
Oil platforms may be built in the middle of the ocean. How does an oil platform work?

A. it covers fissures to avoid oil leaks from the ocean floor.

B. it drills the seabed and pumps the oil to the surface.

C. it removes the oil on the surface during oil spills.

D. it recycles the oil that is collected from different sources.
Answer
Which describes the process of injecting fluids into cracks of rocks to recover oil deposits?

A. fracking

B. restoring

C. drilling

D. cementing
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