Unit 8.2 MiSTAR

Front

What is the oldest fossil in Maria’s rock section?

Back

Layer A

Front

How are sedimentary rocks formed?

Back

Sedimentary rocks are formed through compaction and cementation.

Front

What can a scientist infer if they find a fish fossil in the desert?

Back

The water covered the area long ago.

Front

Which type of rock are most fossils found?

Back

Most fossils are found in sedimentary rock.

Front

What are the oldest fossils in the rock strata?

Back

The oldest fossils in the rock strata are trilobites.

Front

Define sedimentary rock.

Back

Sedimentary rock is a type of rock that is formed by the accumulation and compaction of mineral and organic particles.

Front

What is compaction in the context of sedimentary rock formation?

Back

Compaction is the process where sediments are pressed together under pressure, reducing their volume.

Front

What is cementation in sedimentary rock formation?

Back

Cementation is the process where dissolved minerals crystallize and bind sediment particles together.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of ancient organisms.

Front

What is the significance of trilobites in the fossil record?

Back

Trilobites are significant because they are among the oldest known fossils and provide insight into early life on Earth.