Human Impact

Engineers are developing new cars that use fuel sources other than gas. These cars cost less to use. They also make fewer waste products than gas-powered cars. If more people start driving these new cars, what will be the most likely result?

• More brand of cars

• Less road construction

• More public transportation

• Lower levels of air pollution

What is a way of improving air quality?

• Driving large cars

• Building more factories

• Burning wood in the fireplace

• Using solar energy to produce electricity

Increasing carbon dioxide in the atmosphere may contribute to global warming. Which is an example of one way humans can reduce the carbon dioxide that is added to the atmosphere?

• riding a bicycle instead of driving

• riding in a bus to school instead of walking

• playing with indoor toys instead of outdoor toys

• taking several short car trips instead of one long one

A scientist discovered a way to turn plant material into fuel. This more cleanly burning fuel can be used in cars. How do people most likely benefit from turning plant material into fuel?

• Cars are safer to drive.

• Farmers grow more plants.

• The amount of air pollution is reduced.

• The number of cars around the world increases.

Some scientists think their new car fuel will produce fewer chemicals than burning gasoline. The scientists test their hypothesis by performing several trials to compare the fuels. If the results of the trials agree with their hypothesis, in which area will their research most likely help?

• recycling trash

• conserving water

• reducing air pollution

• protesting endangered species

Many communities in the United States use coal to produce electricity. One problem with using coal is that

• very little energy is produced

• ecosystems can be damaged

• it contains harmful bacteria

• it is a very rare resource

Which human activity will help decrease air pollution?

• burning crops

• driving a hybrid car

• burning household garbage

• using coal to produce energy

What is the greatest contributor to air pollution in the United States?

• factories

• automobiles

• power plants

• burning waste

The Jones family cares about the environment. They run their dishwasher only when it is completely full. Which of the following BEST explains why they do this?

• To save money
• To recycle dish soap
• To reduce sewage
• To conserve water

Tags

NGSS.MS-ESS2-4

What does conserving resources mean?

• Use as much of the resources as you can
• Only use the resources at school
• Protecting the resource so it does not run out

Tags

NGSS.MS-ESS3-3