Science review

Fresh water is one of the most important natural resources on earth. Above is a chart that shows how water is used by a typical family.

Below are four ways you can conserve water. Which would conserve the most water?

• Taking showers that are only half as long.

• Stopping all the leaks in your house.

• Handwashing dishes instead of using a dishwasher.

• Taking showers only, no baths.

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NGSS.MS-ESS3-4

Above is a bar graph showing how the average family uses water. Fresh water is a vitally important resource and its supply is limited. You want to try and help conserve this resource by cutting the usage of one of the fixtures above in half.

To conserve the most water, which fixture should you choose?

• shower

• washing machine

• dishwasher

• toilet

Emily writes on both sides of her paper at school. Her family also recycles newspapers at home. Which natural resource is Emily and her family conserving?

• water

• energy

• trees

• animals

Which of these is the BEST example of the sustainable use of a natural resource?

• several governments agree to limit the amount of fish harvested from an ocean

• farmers use irrigation to grow lettuce and other vegetable crops

• a treaty is reached to set a fixed price for oil

• utility companies switch from coal to natural gas fuels to produce electricity

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NGSS.MS-ESS3-4

NGSS.MS-LS2-5

Which is one way to conserve water?

• drink 8 oz a day

• fix leaky faucets

• take baths not showers

• use a sprinkler to water plants

Scientists have discovered how to use electricity to power cars. Running cars on electricity could help _____.

• the big oil companies

• use up mineral resources

• conserve gasoline

• pollute the atmosphere

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NGSS.HS-ESS3-4

NGSS.HS-ETS1-3

Jill has decided that she wants to start conserving gasoline. Which one would NOT be a way of conserving gasoline and protecting the environment?

• driving to work alone in her SUV

• using public transportation (bus, train, etc.)

• carpooling to and from work

• purchasing a hybrid car that uses less gasoline

Which activity will help conserve our natural resources?

• bringing cloth bags to the grocery store

• cutting down forests to build shopping centers

• watering the lawn everyday

• using only one side of the paper

Tags

NGSS.MS-LS2-5

Instead of clear-cutting land and moving on, a local lumber business decides to start farming trees: cutting some of the trees and planting the fields they have just cut with saplings.

Compared to the old method of clear-cutting, evaluate the impact this new strategy will have on the environment.

• Negative effect because it's destroying the environment

• Positive, since it's a good plan to use renewable resource

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

There are many methods used to obtain energy for use in our our daily lives. Some of these methods have possible environmental consequences to rivers, groundwater, and organisms.

Which types of energy sources have very few or no negative environmental consequences?

• petroleum and nuclear

• wind and solar

• coal and petroleum

• solar and nuclear

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7