Term 5 - Science 8 B

What are fossils?

Why are fossils important? Give at least two answers.

Fossils are made through a process with multiple stages called

• Sedimentation

• Fossilisation

• Fussion

• Ignition

After a plant or animal dies. What needs to happen first for a fossil to form?

• A plant or animal must be covered by sediment.

• A plant or animal must die and decompose.

• Sediments fill a mold to form a cast.

• An earthquake shifts the land up.

How can the study of fossils provide evidence for the theory of evolution?

• Fossils can be used to determine the age of the Earth

• Fossils can show how species have changed over time

• Fossils can reveal the composition of ancient atmospheres

• Fossils can be used to predict future climate change

What type of fossil is formed when an organism's remains are completely replaced by minerals? This fossils look like they turned to stone.

• Body fossil

• Mold fossil

• Cast fossil

• Petrified fossil

Which type of fossil is formed when an organism's body leaves an impression in sediment that later hardens into rock?

• Body fossil

• Mold fossil

• Cast fossil

• Petrified fossil

Process in which rock fragments are washed away from the site they were broken down.

What is the term used to describe the process by which rock is broken down into smaller pieces?

• Fossilization

• Erosion

• Deposition

• Weathering

Which of the following is an example of mechanical weathering?

• Acid rain dissolving the stone

• Plant roots breaking apart rock

• Oxidation of iron in rock

• Water freezing in the cracks of rock