Show:
Natural Resources
Rocks
Soil
Weathering
Fossils
100
What are natural resources?
materials we use that come from nature
100
What are rocks?
the hard, solid parts of Earth
100
What is soil?
the loose, top layer of Earth
100
What is weathering?
the breaking apart of rocks into smaller pieces
100
What is a fossil?
a print or part of a plant or animal that lived long ago
200
What is a natural resource that both plants and animals need in order to live?
water, air
200
Are rocks living or non-living?
non-living
200
What is soil made of?
dead plants and animals, rocks, water, air
200
What are two things that cause weathering?
water, wind, ice, rust
200
Why do scientists study fossils?
to learn about plants and animals of long ago
300
Name two natural resources and explain how we use them.
answers vary
300
What are rocks made of?
minerals
300
What kind of soil is best for growing most plants?
loam
300
True or False: Weathering can be caused by plant growth.
true
300
Why do scientists study fossils of dinosaur teeth?
to find out what kind of food dinosaurs ate
400
What natural resources do we use to make clothes?
plants (cotton), animals (skin, fur)
400
What are three properties of minerals?
hardness, color, and luster
400
Name three kinds of soil.
sandy soil, clay soil, loam
400
Name an important landform in Arizona that was created by weathering.
the Grand Canyon
400
Describe how an animal becomes a fossil.
1. an animal dies 2. the dead animal is covered in sand and mud 3. the sand and mud harden into a rock
500
What do we use wood, oil, and gas for?
fuel
500
Put the following rocks into order from largest to smallest size: small rocks, boulders, sand, large rocks, gravel
boulders, large rocks, small rocks, gravel, sand
500
What kind of soil does not hold water well.
sandy soil
500
Describe how rust can weather rocks.
1. some rocks have iron in them 2. the iron gets wet and mixes with air 3. rust forms and weakens the rock 4. the rock breaks apart
500
Besides leaving an imprint or turning into a rock, how else can an animal or plant be fossilized?
covered in tar, hardened in amber, frozen in ice