prep 2 , unit 3 , lesson 1

Fossils are often found in .......... rocks.

• metamorphic

• sedimentary

• igneous

• volcanic

Which of the following terms is more precise in describing the remains and traces of old living organisms that were preserved in sedimentary rocks?..........

• Extinction.

• The red list.

• Fossils.

• Petrification.

Worms' tunnels fossil is formed, because of.........

• the presence of hard skeleton.

• the activity of worms during their life.

• the death of the worms and quickly buried in sedimentary rocks.

• the death of the worms and quickly buried in ice layers.

The complete body fossil of mammoth is found preserved in.......

• amber.

• snow.

• sedimentary rocks.

• ocean.

Complete body fossils of insects are found preserved in..........

• ammonites.

• amber.

• igneous rocks.

• ambergris.

On the solidification of the resinous matter secreted by pine trees in the old geological periods, it forms...........

• ammonites fossil.

• trilobite fossil.

• amber fossil.

• nummulites fossil.

Are the dinosaur's eggs considered as examples of petrified fossils ?.............

• Yes, because minerals replace whose organic matter part by part.

• Yes, because they carry the internal details of the eggs.

• No, because they aren't considered as fossils.

• No, because they show the remains of dinosaur after its death.

What happened when minerals replaced the wood of the tree's stems and trunks, which are older than 35 million years? ..........

• A complete body fossil has been formed.

• A petrified fossil has been formed.

• A trilobite fossil has been formed.

• A dinosaur tooth fossil has been formed.

........... fossils are the fossils of organisms that had lived for a short period of time in the past and had a wide geographical range, then became extinct.

• Petrified

• Index

• Ferns

• Coral

Not all the fossils are considered as index fossils and that is because they are characterized by ............

• long range of time and limited geographical range.

• short range of time and wide geographical range.

• long range of time and wide geographical range.

• short range of time and limited geographical range.