Science Unit 3-Lesson 2 Vocab 4th grade

Any remains or imprints of living things from the past.

• Fossil

• Sediment

• Sedimentary Rock

The particles of soil or rock that have been eroded and deposited.

• Sedimentary Rock

• Fossil

• Sediment

A rock that forms when small bits of materials (sediment) are pressed together in layers.

• Sedimentary Rock

• Sediment

• Fossil

Who are the people that collect information from rock layers and fossils to learn about changes that occurred over time on Earth?

• Archaeologist

• Paleontologist

• Botanist

What is created when the bones of an organism are pressed between layers of mud and sand until it hardens into rock or an imprint is left (like a footprint)?

• Erosion

• Fossil

• Earthquake

The layers in which a fossil is found can tell us what 3 things?

• When it lived (deep layers are older than shallow layers).

• How it lived (what type of food it ate- plants or animals).

• The environment in which it lived (water or dry land).

• If the environment changed over time (flood or drought).

______ can affect the patterns found in rocks.

How can a new layer form?

• Rapidly (volcanic eruption)

• No new layers ever form.

• Medium Speed (Tornado)

• Slowly (Slow plate movements)