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6th Grade Chapter 15

The Atmosphere

QuestionAnswer
air pressure is measured in millibars and inches of mercury
ozone layer protects living things on Earth from ultraviolet radiation
ozone layer is found in the stratosphere
acid rain forms when water combines with sulfur oxides
weather the condition of Earth's atmosphere at a particular time and place
pollutants harmful substances in air, water, or soil
photochemical smog results from the interaction of pollutants in the presence of sunlight
ozone is a form of oxygen with three oxygen atoms in each molecule
troposphere the lowest and shallowest layer of the atmosphere
atmosphere the layer of gases that surrounds Earth
ionosphere where radio waves are reflected back to Earth by particles
mesosphere the layer of the atmosphere between the stratosphere and the thermosphere
water vapor is water in the form of a gas
barometers instruments used to measure air pressure
mesosphere protects Earth's surface from being hit by most meteoroids
the layers of the atmosphere are classified according to changes in temperature
troposphere the layer in which weather occurs
most air pollution comes from burning fossil fuels
the two most abundant gases in the atmosphere are nitrogen and oxygen
Earth's atmosphere is important to living things because it provides all the gases that living things need to survive
Earth's atmosphere traps energy from the sun, which allows water to exist as a liquid
an aneroid barometer is different from a mercury barometer in that it does not contain a liquid
the percentage of our atmosphere made up of gases other than nitrogen and oxygen is 1 percent
the air pressure acting on the roof of your house comes from all the air above your roof
as you rise upwards in the atmosphere air pressure decreases
when climbing a mountain, you get out of breath easily because there is less oxygen in each cubic meter of air
from Earth to space, the main layers in our atmosphere are troposphere, stratosphere, mesosphere, thermosphere
the first layer of the atmosphere an astronaut passes through during reentry from space is the exosphere
nearly half of the pollution caused by burning fossil fuels comes from motor vehicles
one thing people in the United States could do to reduce air pollution is use more public transportation
Created by: Mrs. Gordon
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