Sedimentary Rocks and Fossil Fuels

Front

Karen and Timothy are making a table to list the steps in the formation of fossil fuels. What processes should replace the question marks in the table?

Back

step 1: growth of organisms; step 3: compaction and heating

Front

Where do fossil fuels come from?

Back

both plant and animal remains

Front

Where does most sediment come from?

Back

weathering of older rocks

Front

What process best explains how layers of sediment at the bottom of a lake turn into sedimentary rock?

Back

The pressure of the water forces the layers of sediment together.

Front

What type of rock is limestone, which forms from tiny pieces of sea shells that collect and are buried on the ocean floor?

Back

sedimentary

Front

What process at the surface of the Earth is part of the formation of sedimentary rocks?

Back

water deposited sediment in layers

Front

Fossil fuel ----

Back

form from the remains of plants and animals that lived long ago

Front

What were fossil fuels before they became fossil fuels?

Back

plants and animals

Front

Which of the rocks' characteristics best shows that the rocks formed in layers over time?

Back

the striped pattern in the rocks

Front

Mia is making a model of one kind of rock by layering crackers and peanut butter. What does Mia's model show about how rocks are formed?

Back

rocks can be formed in layers