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 |
|
|
ozone |
a form of oxygen that has 3 oxygen atoms in each molecule instead of 2 |
|
|
atmosphere |
the layer of gases that surrounds Earth |
|
|
water vapor |
water in the form of a gas
|
|
|
pollutant |
harmful substance in the air water or soil
|
|
|
photochemical smog |
a brownish haze that is a mixture of ozone and 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 to a given volume
|
|
|
pressure |
the force pushing on an area or surface
|
|
|
air pressure |
a force that is the result of the weight of a column of air pushing down on an area
|
|
|
barometer |
an instrument that measures 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 layer of Earth's atmosphere where weather occurs
|
|
|
stratosphere
|
the second lowest layer of Earth's atmosphere; the ozone layer is located in the upper stratosphere
|
|
|
mesosphere
|
the middle layer of 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 charged 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 |
