Chapter 15 Vocabulary
the condition of Earth’s atmosphere at a particular time and place
JOT:
PICTURE:
weather
the envelope of gases that surrounds the planet
JOT:
PICTURE:
atmosphere
a form of oxygen that has three oxygen atoms in each molecule instead of the
usual two
JOT:
PICTURE:
ozone
water in the form of a gas
JOT:
water vapor
PICTURE:
the amount of mass of a substance in a given volume; mass per unit volume
JOT:
density
PICTURE:
mass
volume
the force exerted on a surface divided by the total area over which the force is
exerted
JOT:
pressure
PICTURE:
force on a surface
total area where force is exerted
the pressure caused by the weight of a column of air pushing down on an area
JOT:
PICTURE:
air pressure
instrument used to measure changes in air pressure
JOT:
barometer
PICTURE:
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
mercury
barometer
JOT:
PICTURE:
instrument that measures changes in air pressure without using a liquid
aneroid
barometer
JOT:
PICTURE:
elevation above sea level
altitude
JOT:
PICTURE:
the lowest layer of Earth’s atmosphere
JOT:
PICTURE:
troposphere
the second-lowest layer of Earth’s atmosphere
JOT:
stratosphere
PICTURE:
the layer of Earth’s atmosphere immediately above the stratosphere
JOT:
PICTURE:
mesosphere
the outermost layer of Earth’s atmosphere
JOT:
PICTURE:
thermosphere
the lower part of the thermosphere
JOT:
PICTURE:
ionosphere
the outer layer of the thermosphere
exosphere
JOT:
PICTURE:
a harmful substance in the air, water, or soil
pollutants
photochemical
smog
JOT:
PICTURE:
a brownish haze that is a mixture of ozone and other chemicals, formed when
pollutants react with each other in the presence of sunlight
JOT:
PICTURE:
rain that contains more acid than normal
acid rain
JOT:
PICTURE: