Sedimentary Rocks and FF

What feature is the same in the formation of many sedimentary rocks and all fossil fuels? Many sedimentary rocks and all fossil fuels -

• require material to be buried and exposed to heat and pressure.
• are made out of organic material that stores the Sun’s energy
• form where there are frequent earthquakes and volcanic activity.
• are produced high in the mountains where temperatures are low.

Sedimentary rocks form when broken bits of other rock are deposited and then –

• buried and squeezed and cemented together.
• melted by the heat of the Earth’s core.
• completely dissolved in salt water in the ocean.
• used by humans as a natural resource.

Fossil fuels form in sedimentary rocks when –

• plants use the nutrients in sediments to grow.
• organic matter is buried along with sediments.
• rivers carry sediments down mountainsides.
• sediments are used by humans as a resource

Oil formation occurs where, millions of years ago, there were large oceans. This is because oceans have –

• waves that are constantly moving.
• great numbers of microscopic organisms.
• currents that mix the water thoroughly.
• deep caverns where no light can reach.

What conditions in an ancient environment would make it suitable to the formation of fossil fuels?

• Movement of surface water causing weathering of rock.
• Frequent volcanic eruptions and forest fires.
• Extremes in high and low temperatures during the day.
• Abundant plant life and rapid laying down of sediments.

The formation of fossil fuels is a process that takes millions of years and starts with energy from the Sun. The Sun contributes to the formation of fossil fuels by –

• heating up the Earth's core where fossil fuels form.
• generating winds, so humans use less fossil fuels.
• giving energy to the living things that become fossil fuels.
• giving off heat, similar to burning fossil fuels.

Oil formation starts when organisms in the ocean die and then –

• get eaten by larger organisms that receive their energy
• are carried by currents all over the planet.
• decay completely so that their matter is recycled.
• settle to the bottom and are buried in sediments.

Most sedimentary rock forms in the ocean. This is
because oceans –

• emit much less pollution than most other habitats.
• receive the majority of the Sun’s energy.
• have fewer plants and animals than on land.
• are where most bits of broken rock get deposited.