science grade 3 practice 1

advertisement
Grade 3 Science department
Unit 6: People and resources
Lesson 1: What Are Some Natural
Resources?
Science Words
Say each word quietly to yourself. Then read the meaning.
Read the tip to help you remember.
natural resource [NACH•er•uhl REE•sawrs] something that comes
from nature that people use
Resource contains the word source. A source is the place where
something begins. Resources are sources of materials needed for
making things, such as soap and paper.
nonrenewable resource [nahn•rih•NOO•uh•buhl REE•sawrs] a natural
resource that can be used up
Nonrenewable has four parts: non- re- -new- -able.
Nonrenewable and not begin the same way. A nonrenewable
resource is not renewable.
renewable resource [rih•NOO•uh•buhl REE•sawrs] a resource that
can be replaced easily
Renewable has three parts: re- -new- -able.
Renew and redo begin the same way. When you redo something,
you do it again. A renewable resource is a resource that can be
made new again.
Solar panels collect the sun’s
energy, a renewable resource, to
heat this house.
Grade 3 Science department
What Are Some Natural Resources?
fossil fuel [FAHS•uhl FYOO•uhl] fuel that forms over many years
from the remains of once-living things
You know that a fossil is something that forms over a very long
period of time. A fossil fuel is a fuel that forms from fossils.
conservation [kahn•ser•VAY•shuhn] saving resources by using them
wisely
If you were in a desert, you would want to make your water last as
long as possible. To do that, you would be careful not to spill it.
You would use it wisely. You would conserve it.
Conservation and conserve are in the same word family.
Conservation is conserving our natural resources so they last as
long as possible.
pollution [puh•LOO•shyhn] harmful substances in the environment
Pollution and poison begin with the same sound. Pollution
poisons the environment by making it harmful to living things.
These pictures show different kinds of pollution.
Grade 3 Science department
What Are Some Natural Resources?
Science Concepts
Read the Ideas more than once. Do your best to remember them.
1.
Water, soil, and air are important natural resources.
2.
Trees are a renewable resource used to make paper and wood
products.
3.
Coal, oil, and natural gas are nonrenewable resources called fossil
fuels.
4.
Fossil fuels are used to produce energy, including electricity.
5.
Conservation can help make fossil fuels last longer.
6.
Products like clothes, toys, and computers are from natural
resources.
7.
Energy from the sun and the wind are renewable energy resources.
8.
Smoke, chemicals, and garbage cause air and land pollution.
9.
Burning fossil fuels in cars and burning coal for energy causes
pollution.
10. The “3 Rs” –reduce, reuse, recycle–can help you use resources
carefully.
Grade 3 Science department
Choose the best answer:
____ 1. Some resources are renewable. Which resource is renewable?
A.
B.
C.
D.
Coal
Gasoline
Soil
Trees
____ 2. Which is a nonrenewable resource?
A.
B.
C.
D.
Coal
Fish
Trees
Water
____ 3. Resources can be classified in different ways. Which is a nonrenewable
resource?
A.
B.
C.
D.
Animals
Soil
Trees
Water
____ 4. Look at this fish.
Which of these is the best way to classify this fish?
A.
B.
C.
D.
a renewable resource
a nonrenewable resource
a product made from a renewable resource
a product made from a nonrenewable resource
Grade 3 Science department
____ 5. These resources are sorted into two groups.
Group 1
Group 2
coal
wood
oil
sunlight
natural gas
water
What is the best name for Group 1?
A.
B.
C.
D.
fossil fuels
natural resources
Products
renewable resources
____ 6. Some resources are nonrenewable. Which tells about all nonrenewable
resources?
A.
B.
C.
D.
They are fossil fuels.
They can be used up.
They must be mined.
They are used for fuels.
____ 7. Which is something that comes from nature that people can use?
A.
B.
C.
D.
Conservation
Fuel
a natural resource
Pollution
Short Answer
1- Look at this picture.
Grade 3 Science department
List two products the man is using. Tell what natural resource was used to
make each product.
_____________________________________________________________
_____
_____________________________________________________________
_____
_____________________________________________________________
_____________________________________________________________
__________
Download