Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
weather
|
The condition of Earth's atmosphere at a particular time and place.
|
|
|
atmosphere
|
The layer of gas that surrounds Earth.
|
|
|
water vapor
|
The invisible, gaseous form of water.
|
|
|
ozone
|
A form of oxygen that as three atoms in each molecule instead of the usual two.
|
|
|
pollutants
|
Harmful substances in the air, water, or soil.
|
|
|
photochemical smog
|
A brownish haze that is a mixture of ozone and other chemicals, formed when nitrogen oxides, hydrocarbons, and other pollutants react with each other in the presence of sunlight.
|
|
|
acid rain
|
Rain that contains more acid than normal.
|
|
|
density
|
The amount of mass of a substance in a given volume.
|
|
|
pressure
|
The force that something exerts over a given area;also the outward push of a gas against a container divided by the area of the walls of the container.
|
|
|
air pressure
|
A force that is the result of the weight of a column of air pushing down on an area.
|
|
|
barometer
|
An instrument used to measure changes in air pressure.
|
|
|
mercury barometer
|
An instrument that measures changes in air pressure, consisting of a glass tube partially filled with mercury with its open end resting in a dish of mercury. Air pressure pushing on the mercury in the dish forces the mercury in the tube higher.
|
|
|
aneroid barometer
|
An instrument that measures changes in air pressure without using a liquid. Changes in the shape of an airtight metal box cause a needle on the barometer dial to move
|
|
|
altitude
|
Elevation above sea level.
|
|
|
troposphere
|
The lowest level of Earth's atmosphere, where weather occurs.
|
|
|
stratosphere
|
The second-lowest layer of the Earth's atmosphere; the ozone layer is located in the upper stratosphere.
|
|
|
mesosphere
|
The middle layer of the Earth's atmosphere the layer in which most meteoroids burn up.
|
|
|
thermosphere
|
The outermost layer of Earth's atmosphere.
|
|
|
ionosphere
|
The lower part of the thermosphere where electrically charge particles called ions are found.
|
|
|
aurora borealis
|
A colorful glowing display in the sky caused when particles from the sun strike oxygen and nitrogen atoms in the ionosphere, also called the Northern Lights.
|
|
|
exosphere
|
The outer layer of the thermosphere extending outward into space.
|
