Unit 1: Rocks, soil and fossils

The hardened remains of a plant or an animal that lived long ago

• extinction

• tree

• fossil

• tissue

Which thing is not a fossil

• petrified wood

• the footprint of a dinosaur

• a rock that is 350 million years old

• the imprint of a 100 million old fern in a rock

A __________ is a natural, nonliving substance that makes up rocks.

• Sedimentary rock

• Igneous Rock

• Mineral

• Sediment

What type of rock is formed when magma and lava cools and hardens?

• minerals

• sedimentary

• igneous

• metamorphic

A _________ is a solid object that is formed in nature and has never been alive.

• Mineral

• Rock

What are the THREE types of soil we learned about?

• Rock

• Sand

• Clay

• Loam

Dinosaur tracks in mud are an example of _________ ________.

• Trace fossils

• Cast

• Mold

For a fossil to form an animal must die and buried by ______, _______, and ________.

• Trace fossils, mold, or cast

• Grass, soil, or rocks

• Mud, sand, or clay

Fossils of fish are found under land where cows now live. You know that

• farmers fed fish to cows

• fish used to live on land

• fish were dropped by flying birds

• this land was once under the ocean

What was sand before it was broken down?

• Soil

• Water

• Cement

• Rock