1
Any type of substance that is in air and makes it unsafe to breathe
air pollution
gases released from buses, cars, and trucks that pollute the air
vehicle exhaust
Why do large cities often experience more air pollution than rural areas?
a. Cities have more trees
b. Cities have more vehicles and factories
c. Rural areas have stronger winds
d. Rural areas use more renewable energy
B
What is air pollution?
A. The movement of air from high pressure to low pressure
B. The presence of harmful substances in the air
C. The natural mixture of gases in the atmosphere
D. The process of plants releasing oxygen
B
Name two common sources of air pollution.
Car exhaust and factory emissions. (Accept: power plants, wildfires, burning fossil fuels.)
a type of air pollution that results from a mixture of gases from burning fuels, air, and sunlight that makes air look hazy
the factors and influences that affect the growth, health, progress, functioning, etc. of someone or something
environment
make smaller or less in amount, degree, or size
How does burning fossil fuels affect Earth’s climate?
a. It increases oxygen levels
b. It reduces rainfall
c. It increases greenhouse gases that trap heat
d. It cools the atmosphere
C
Why are children and elderly people more affected by air pollution?
Their lungs are more sensitive, making them more vulnerable to breathing problems.
a measure of how clean the air is
air quality
factory
minimal levels of pollution
clean air
Why are particulate pollutants especially dangerous to humans?
a. They are colorful
b. They dissolve in water
c. They can enter the lungs and cause breathing problems
d. They make the air smell bad
What are fossil fuels?
Fossil fuels are natural fuels like coal, oil, and natural gas that are burned for energy.
layer that gas is found in air
ozone layer
gases of particles released into the air from cars, factories, or power plants
emissions
changes in health resulting from exposure to someone
heath effects
Which situation would MOST likely increase air pollution in a community?
a. Building a solar farm
b. Increasing public transportation
c. Opening a coal-burning power plant
d. Planting more trees
A
How do vehicles contribute to air pollution?
Vehicles burn gasoline or diesel, releasing harmful gases like carbon monoxide and carbon dioxide into the air.
an energy resource that does not release pollutants when it is used
clean energy
fuels like coal, oil, and gas that come from Earth and create pollution when burned
fossil fuels
a gas released when fuels are burned too much can harm the environment
carbon dioxide
How can air pollution contribute to acid rain?
a. Pollutant gases mix with water vapor in the atmosphere
b. Rain absorbs oxygen
c. Sunlight turns water into acid
d. Clouds release chemicals naturally
A
What is smog?
Smog is a thick layer of polluted air that forms when sunlight reacts with pollutants from cars and factories.