Fossils

Which statement is true?

• Layer C is the oldest

• Layer B is older than Layer A

• Layer B is older than Layer C

• Layer A is the youngest

Which type of rock can contain fossils?

• Metamorphic

• Stereosonic

• Sedimentary

• Igneous

Which conditions might lead to fossil formation? (Choose 3)

• Decomposition

• Getting buried quickly by sediment

• getting trapped in a tar pit

• getting eaten by another animal

• making a footprint in mud

What is a good rule to follow when determining the age of rock layers?

• The oldest is always on the top.

• The rock layers get older as you dig deeper.

• The layers position does not necessarily tell you about the age.

• The youngest is always on the bottom.

Describes a group of living things that are no longer living.

• fossil

• extinct

• endangered

• dinosaur

If a scientist found a fish fossil in the desert, what can they infer?

• An animal ate the fish.

• The water covered the area long ago.

• Today's fish looks the same

• The fish is endangered.

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 a mold to form a cast.

• An earthquake shifts the land up.

What is the final step of fossilization?

• Minerals around the skeleton preserve the bone.

• The animal is covered of layers of dirt and sediment.

• Wind and water erosion expose the fossil to the surface.

• Over time, layers build pressure that turn the layers into stone.

What a fossilized jawbone or tooth tell us about that animal?

• The animal's favorite food.

• When the animal lived.

• What the animal ate.

• What color was the animal.

Fossils usually form from bones and other hard parts of animals.

• True

• False