Rock-Natural solid made of one or more minerals

Soil-loose top layer of Earth's surface

Resource-anything people use or need

Natural Resource-something found in nature that people can use to meet their needs

Medicine-product that helps people who are ill or in pain

Transportation-ways to move people or things

1. People use rocks to build things like houses, roads, walls, and walkways, and to make sculptures.

2. People use soil to grow food and to make adobe bricks to build things with.

3. Trees are used for building furniture and houses, and making paper.

3. People use plants for food. They eat some plant parts and use others to make bread, oils, spices, and other food products.

4. Plants are used for fuel and to make furniture, clothing, medicines, and many other products.

5. Water is a resource people use every day. Water is used for drinking, bathing, cooking, washing things, swimming, cleaning, transportation, making electricity, and watering plants.

UNIT C
Chapter Two- Earth Long Ago

Vocabulary Words

Fossil-what is left of a plant or animal that lived long ago

Palenontologist-scientist who studies fossils

Reconstruct-rebuild

Extinct-once alive but no longer existing

Dinosaur-kind of animal that lived millions of years ago

Triceratops-name of one kind of dinosaur

1. Plants and animals lived on the Earth before people did. People know this because they have found fossils.

2. By studying fossils, a palenontologist learns about plants and animals that lived long ago.

3. Some fossils are made when a dead animal is covered by mud and sand. As the animal's body rots, the mud gets pressed around the animal until the mud turns to rock. The animal's body leaves a print of itself.

4. Fossils are found in rock, tar, and amber.

5. Scientists get many fossils by carefully chipping and removing them from rock.

6. Scientist learn from fossils what animals and plants that lived long ago were like. They also learn how plants and animals have changed.

7. Triceratops means "three horned face".

8. Tyrannosaurus means "tyrant lizard king".

9. One way scientists learn about dinosaurs is by comparing them to animals that live today.

10. Scientists have learned what dinosaurs looked like, what they ate, and that they laid eggs.

"BUZZ BACK TO HOME PAGE!"