Science (4th) Ch. 6 Lesson 3 - Resources from the Past (vocab & notes) Flashcards
Any evidence of an organism that lived in the past.
fossil
Hardened tree sap, yellow to brown color, that can be a source of insect fossils.
amber
A fossil formed or shaped within a mold.
cast
A fossil made by an impression.
imprint
A source of energy made from the remains of ancient, once-living things.
fossil fuel
A natural material or source of energy that is useful to people and cannot be replaced easily.
nonrenewable resource
A useful material that is replaced quickly in nature.
renewable resource
When a plant or animal dies, the soft parts decay quickly or are eaten. Bones, teeth, and shells last longer and therefore are more likely to become ____________.
fossils
Wood that is replaced by minerals and turns to stone?
petrified wood
Any material found on Earth that can be used by people?
resource
Name three fossil fuels?
coal
oil
natural gas
Coal, oil & natural gas are examples of ___________.
fossil fuels
Fossil fuels are energy sources formed millions of years ago. They form from the remains of __________ & ___________.
plants
animals
Fossil fuels are renewable or nonrenewable resources?
nonrenewable resources
________________ are expensive to use, pollute the air and form very slowly. They cannot be replaced easily.
Fossil fuels