7.2-Air Pollution - 3

The ____ industry implemented technology to lower emissions in new vehicles.

• Aviation

• Pharmaceutical

• Automobile

• Agriculture

More than 5 million people die every year due to ____.

• Water pollution

• Noise pollution

• Air pollution

• Soil pollution

Scientists have developed ____, that release fewer chemicals into the air.

• Coal

• Gasoline

• Biofuels

• Petroleum

Electric and hybrid vehicles use the combination of ____ and gasoline.

• Solar power

• Hydrogen

• Electricity

• Wind energy

Electric cars, biofuels, hybrid cars, carpooling, biking, walking, not using fossil fuels, using solar, wind hydroelectric and geothermal energy.

• Ways to reduce emissions

• Ways to increase emissions

• It will not affect emissions

____ rays cause sunburn.

• Oxygen

• Visible light

• Ultraviolet

• Shadow

The ____ layer is situated about 15 to 30 km above the Earth's surface.

• Troposphere

• Ozone

• Thermosphere

• Exosphere

Ozone layer works like a ____ to protect living things from UV rays.

• Glass

• Mirror

• Shield

• Lens

An ozone molecule has ____ oxygen atoms.

• Two

• Three

• Four

• Five

When sunlight hits the ozone molecule, it absorbs UV rays and splits into one oxygen atom and one oxygen gas molecule. That oxygen atom combines with ____ again to form an ozone molecule.

• Carbon dioxide gas molecule

• Nitrogen gas molecule

• Oxygen gas molecule