Question

2) When petroleum and natural gas are extracted through the rock layers, natural gas is found to be present above the oil. What explains the observation? *

1 point

(a) They have different mass.

(b) They have different densities.

(c) They have different physical state.

(d) They have different amount of impurities.

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Answer 1

Answer:

d..................

Answer 2

When petroleum and natural gas are extracted through the rock layers, natural gas is found to be present above the oil, this is because they both have different densities.

• Both natural gas and petroleum are fossil fuels. They are extracted from the nature because of their extensive uses.
• They both are present under the layers of the earth. But they are present at different levels.
• This is because they both have different densities. Density in simple words refer to the mass or volume of any substance.
• Petroleum is also called as crude oil. Because oil has thick and dense nature, it tends to rest at the bottom of the earth's surface.
• On the other hand, natural gas is light and it do not settle on the surface, rather it is found above the oil.