41 terms

Science test today


Terms in this set (...)

The states in which water exists in the atmosphere are called
The gas phase of water is known as
Water vapor
The solid phase is called
The liquid phase of water is known as
When does water change from one phase to another
When heat energy is absorbed or released
When ice absorbs energy, it's molecules
Move more quickly
What phase does ice change into when it absorbs energy
When liquid water absorbs energy it changes into
A gas
What happens to waters molecules when it absorbs energy
They collide more frequently
Process in which the fastest moving molecules escape from liquid and form invisible water vapor called
The name for heat energy that is absorbed or released during a phase is called
Latent heat
When liquid water evapores, the water
Absorbs energy from the environment
What happens to energy absorbed by water during evaporation
It becomes potential energy b/w water molecules
The name for the process in which water vapor changes back into a liquid is called
During the condensation of water latent heat is
Is released into the surrounding air
What happened to latent heat when ice thaws
It is absorbed
When water freezes, latent heat
Water is released into the air
Through what process does most water enter the atmosphere
Where on earth does most evaporation take place
In the oceans of the equatorial regions
Four other important sources of water vapor in the atmosphere
Evaporation from:
4.)and soil
What usually happens to ice before it changes into a gas
It melts into a liquid
What is the process when a solid changes directly into a gas
Under what conditions might sublimation of snow and ice occur
When the air is dry and the temperature is below freezing
Water vapor can turn directly into ice without it becoming
A liquid
The temperature in which condensation equals evaporation
Dew point
Water vapor in the atmosphere
The mass of water vapor contained in a given volume of air
Mixing ratio
The mass of water vapor in a unit of air relative to the mass of the dry air
Absolute humidity
What controls humidity
Rates of condensation and evaporation
What determines the rate of evaporation
Air temperature
What happens to the rate of evaporation as the temperature gets higher
It increases
What determines the rate of condensation
Vapor pressure
The part of the total atmospheric pressure that is caused by water vapor is
Vapor pressure
When there is equilibrium b/w the rate of evaporation and the rate of condensation, the air is
The measure of the amount of water vapor in the air is called
Absolute humidity
Why do meteorologist prefer to describe humidity by using the mixing ratio of air
Because as air moves, it's volume changes as a result of temperature and pressure changes
Air mass
a large body of air throughout which temperature and moisture content are similar
Cold front
a front edge of a moving mass of cold air that pushes beneath a warmer air mass like a wedge
Warm front
the front edge of an advancing warm air mass that replaces cold air with warmer air
Stationary front
a front of air masses that move very slowly or not at all
Occluded front
a front that forms when a cold air mass overtakes a warm air mass and lifts the warm air mass off the ground and over another air mass