Worksheets5.7A Formation of Sedimentary Rocks and Fossil Fuels
Total questions: 10
Worksheet time: 5mins
1. 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
2. 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
3. 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
4. The features of two groups of natural resources are listed here. Fossil fuels are considered nonrenewable resources because of which feature?
Where they come from
How long they take to form
How they are produced
How useful they are
5. 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
6. Sedimentary rocks form when broken bits of other rock are deposited and then –
melted by the heat of the Earth’s core
completely dissolved in salt water in the ocean
buried and squeezed and cemented together
used by humans as a natural resource
7. 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
8. Oil formation occurs where, millions of years ago, there were large oceans. This is because oceans have –
waves that are constantly moving
currents that mix the water thoroughly
deep caverns where no light can reach
great numbers of tiny marine animals
9. In addition to long periods of time, all of the following are necessary for the formation of fossil fuels EXCEPT –
extreme heat
organic matter
volcanic eruption
intense pressure
10. Several layers of sedimentary rock are illustrated. They are in the same order as when they first formed. Which layer formed first?
Rock Layer W
Rock Layer X
Rock Layer Y
Rock Layer Z
