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Science test
| Question | Answer |
|---|---|
| ozone gas | protects us from too much exposure which can damage our skin, cause cancer, weaken our immune system, and even damage our eyes |
| A catalytic converter, | an emissions control device, was added to automobiles in the mid-1970's. |
| A chlorine atom in a chlorofluorocarbon molecule | is responsible for destroying ozone molecules |
| smog | is the brown haze that forms over some cities |
| what are the temperature in the thermosphere | is very warm |
| Reflection and absorption by the atmosphere prevent | some radiation from reaching Earth's surface |
| Air above the equator | is heated more than at any other place on Earth |
| Emissions are controlled by | laws and new technology (catalytic converters, smokestack scrubbers, electrostatic precipitators) that reduce or prevent air pollution |
| The state of matter where the molecules are spaced the farthest apart is | a gas |
| the troposphere | is the layer of the atmosphere nearest to Earth's surface |
| Air in the troposphere | is warmed by heat from Earth's surface |
| Radiation | is the transfer of energy by electromagnetic waves |
| The exosphere | merges into outer space |
| Electrically charged particles | are found primarily in the ionosphere |
| Too much exposure to ultraviolet radiation can cause | skin cancer |
| Water is the only substance that exists | as a solid, liquid, and gas in Earth's atmosphere |
| Convection | is the transfer of heat by the flow of a heated material |
| Chlorofluorocarbons may be destroying the ozone layer by | destroying ozone molecules |
| The pH of acid rain is | any measurement lower than 5.6 on the pH scale |
| Thermal energy leaves the surface of the Sun and is | reflected, absorbed, and/or radiated in Earth's atmosphere and/or at its surface including all of the land and water |
| About 60% of carbon monoxide comes from | car exhaust |