Download 3rd Grade - Science Unit 2

3rd Grade Science
Unit 2 Test: Earth Materials
Name: _________________________________________ Date: ___________________
1. What is igneous rock made of?
A gases and melted minerals
B tiny pieces of rock
C sedimentary rock that has been squeezed
D layers of rounded grains
2. What type of rock forms when a rock is changed by high heat and pressure?
F igneous
G sedimentary
H metamorphic
J sandstone
3. What is humus made of?
A tiny bits of rock
B sand
C decaying plants and animals
D clay
4. Look at the Minerals Identification Key. The mineral is not dull. It can be
scratched, and it splits into thin sheets. What is the mineral?
Minerals Identification Key
Properties
Mineral
Calcite
Feldspar
Mica
Talc
Hardness
(scratch test)
3
scratched by
nail
6
scratches glass
2
scratched by
fingernail
1
easily
scratched by
fingernail
Color
Luster
Special
Properties
White
Dull/Glassy
Bubbles with
acid
Pink or white
Dull/Pearly
---
Black/Gray
Shiny
Splits into thin
sheets
White
Dull
---
F calcite
G feldspar
H talc
J mica
Cherokee County School District #1
1
3rd Grade Science
Unit 2 Test: Earth Materials
5. How does a cast fossil form?
A when a mold fossil is filled with sediments
B when a living thing is trapped in tree sap
C when a bone is preserved in tar
D when a living thing leaves a mark in sand
6. What can scientists learn by studying fossils?
F They can learn about the environments of the past.
G They can learn about what will happen in the future.
H They can learn about what ancient plants tasted like.
J They can learn about why club mosses grow in warm, wet weather.
7. A student finds fossils of shellfish on a very dry mountain. What do those fossils
most likely show?
A Dinosaurs once lived in that area.
B The area was once covered by water.
C The area has always been a mountain.
D Forests once covered the area.
8. Which lists the bodies of water in order from smallest to largest?
F ocean, lake, pond
G lake, ocean, pond
H pond, lake, ocean
J pond, ocean, lake
9. Into what do most rivers flow?
A a stream or another river
B a lake or a pond
C a sea or an ocean
D a glacier or an ice cap
10. Look at the diagram of a valley. Based on its shape, how was the valley
formed?
F by a glacier
G by a river
H by a volcano
J by wind erosion
11. Which Earth materials do crops need to grow?
A aluminum and steel
B iron ore and copper
C wood and peat
D soil and fresh water
Cherokee County School District #1
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3rd Grade Science
Unit 2 Test: Earth Materials
12. Resources from the Earth can be used for all of the following except:
F landforms
G building structures
H growing plants
J fuels
13. Which slow process breaks rocks into smaller pieces?
A erosion
B gravity
C weathering
D deposition
14. During erosion, what carries loose, broken rocks to new places?
F earthquakes or volcanoes
G plants
H wind or water
J landslides
15. Which process or event changes Earth’s land quickly?
A volcanic eruption
B deposition
C weathering
D erosion
16. What occurs when water covers land that is usually dry?
F a delta
G an earthquake
H a volcanic eruption
J a flood
17. Which process or event is caused by sudden motions in Earth’s crust?
A a hurricane
B a tornado
C an earthquake
D weathering
18. Chris finds something that looks like a rock. It is hard and yellow. A dead
insect is inside it. What did Chris most likely find?
F a trilobite
G a fossil cast
H a fossil mold
J a piece of amber
Cherokee County School District #1
3
3rd Grade Science
Unit 2 Test: Earth Materials
19. Which is a large body of salt water that surrounds a continent?
A sea
B ocean
C river
D lake
20. What is a glacier?
F ice that covers land
G ice that floats in the ocean
H body of flowing liquid water
J water under the ground
21. Which is NOT an example of a landform?
A volcano
B metamorphic
C canyon
D mountain
22. Topsoil has a lot of ____________________.
F silt
G clay
H humus
J subsoil
23. Which two properties would be best to use to identify a mineral?
A color and luster
B shape and luster
C size and magnetism
D hardness and streak
24. Important materials from Earth that living things need are called _____.
F natural resources
G necessary resources
H renewable resources
J nonrenewable resources
25. Which is a use for soil?
A growing plants for food
B building homes
C making countertops
D burning to get energy
Cherokee County School District #1
4
3rd Grade Science
Unit 2 Test: Earth Materials
26. Which of the following is the hardest mineral on Earth?
F mica
G crocoite
H diamond
J molybdenite
27. Name 1 slow process and 1 rapid process and how each can affect the
Earth’s surface.
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
28. Explain why trees are an important natural resource. Give examples in your
answer.
______________________________________________________________________
______________________________________________________________________
Cherokee County School District #1
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3rd Grade Science
Unit 2 Test: Earth Materials
Answers:
1. A
2. H
3. C
4. J
5. A
6. F
7. B
8. H
9. C
10. G
11. D
12. F
13. C
14. H
15. A
16. J
17. C
18. J
19. B
20. F
21. B
22. H
23. A
24. F
25. A
26. H
27. Possible Answers: Refer to Content Notes
28. Possible Answers: Trees are an important natural resource because humans
use them for many different things. People use trees to build new houses and
make paper and paper products from wood pulp.
Cherokee County School District #1
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Students
Cherokee County School District #1
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Total
28. 3-3.7
27. 3-3.8
26. 3-3.2
25. 3-3.7
24. 3-3.7
23. 3-3.2
22. 3-3.1
21. 3-3.6
20. 3-3.5
19. 3-3.5
18. 3-3.3
17. 3-3.8
16. 3-3.8
15. 3-3.8
14. 3-3.8
13. 3-3.8
12. 3-3.7
11. 3-3.7
10. 3-3.6
9. 3-3.5
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7. 3-3.4
6. 3-3.4
5. 3-3.3
4. 3-3.2
3. 3-3.1
2. 3-3.1
1. 3-3.1
3rd Grade Science
Unit 2 Test: Earth Materials