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Science - Atmosphere & Weather
Terms in this set (65)
Composition of the Earth's Atmosphere
78% nitrogen, 21% oxygen, 1% other gases
Earth's Atmosphere - Nitrogen
Earth's Atmosphere - Oxygen
Earth's Atmosphere - Other Gases
a gas formed by the addition of a third oxygen atom to an oxygen molecule
Why is ozone important
it protects the Earth from damaging UV rays from the sun
High pressure causes what kind of weather
Calm weather - air is pushing down on the Earth causing it to sink
Large clouds that often produce thunderstorms
What drives all weather on Earth
Increase in altitude causes (temperature)
Decrease in temperature
Increase in altitude causes (air pressure)
Decrease in air pressure
Air pollution affects
Entire world and climate patterns
The state of the atmosphere at a given time and place.
the pattern of weather over a long period of time
High temperature air masses hold more or less water vapor
More - water molecules are more likely to go into the vapor phase at higher temperatures. Water molecules move faster in higher temperatures.
Low temperature air masses hold more or less water vapor
Less - cold air holds less water vapor because it tends to fall as rain. Water molecules move slower in lower temperatures.
The change of state from a gas to a liquid. There is a loss of heat energy.
The change of a substance from a liquid to a gas. There is a gaining of heat energy.
The falling to earth of any form of water (rain or snow or hail or sleet or mist). There is a loss of heat energy.
Low pressure systems rotate which way in the Northern Hemisphere
High pressure systems rotate which way in the Northern Hemisphere
Cycle that has no beginning or end
Parts of the Water Cycle
evaporation, condensation, precipitation, collection
Evaporation - part it plays in water cycle
Warmth from the sun causes water (from ocean, lakes, rivers) to rise into the air and turn into water vapor (gas) and make clouds.
Condensation - part it plays in water cycle
Water vapor in the air cools down and turns back into liquid water.
Precipitation - part it plays in water cycle
Water (rain, snow, sleet, hail) falls from clouds in the sky.Evaporation - part it plays in water cycle
Collection - part it plays in water cycle
Water that falls from the sky collects in the ocean, lakes and rivers or soaks into the ground.
Layer of atmosphere weather occurs
a "river" of fast moving air high up in the atmosphere
Type of weather associated with a cold front
Type of weather associated with a warm front
Light to moderate precipitation
a breeze blowing toward the land from the sea, especially during the day owing to the relative warmth of the land.
a breeze blowing toward the sea from the land, especially at night, owing to the relative warmth of the sea.
the amount of moisture or water vapor in the air
The ratio of the amount of water vapor in the air to the maximum amount of water vapor the air can hold at a set temperature
The temperature at which gas condenses into a liquid
The transfer of energy by
The direct transfer of heat from one substance to another substance that it is touching.
The transfer of thermal energy by the circulation or movement of a liquid or gas
Radiation - Example
heat from the sun
Conduction - Example
Heat traveling through the bottom of a cooking pot
Convection - Example
Mid latitude wind system that influences weather over the United States. Winds that blow west to east between 30 and 60 degrees in the northern and southern hemispheres
Primary air pollution sources
Pollution emitted directly from a process. Exhaust from cars and factories, volcanic eruptions.
Secondary air pollution sources
Formed in the atmosphere - not emitted directly from a source. Ozone.
Environmental Protection Agency (EPA)
An independent federal agency established to coordinate programs aimed at reducing pollution and protecting the environment. Enforces the Clean Air Act.
A severe storm that develops over tropical oceans and whose strong winds of more than 120 km/h spiral in toward the intensely low-pressure storm center
a localized and violently destructive windstorm occurring over land characterized by a funnel-shaped cloud extending toward the ground
An instrument used to measure temperature
An instrument that measures atmospheric pressure (air pressure)
An instrument used to measure wind speed
a specialized type of radar that can detect precipitation as well as the movement of small particles, which can be used to approximate wind speed
type of satellite that is primarily used to monitor the weather and climate of the Earth
a balloon equipped with meteorological apparatus that is sent into the atmosphere to provide information about the weather.
show weather conditions at a specific location
describing a warm, moist air mass that is formed over the ocean in tropical areas
describing a warm, dry air mass that forms over land in tropical regions.
Cold and humid air mass. forms over icy cold North Pacific and Atlantic oceans. brings fog, rain, and cool tempuratures to the West coast
Cold dry air. forms usually over northern Canada and Alaska
The lowest layer of Earth's atmosphere
The second-lowest layer of Earth's atmosphere.
The layer of Earth's atmosphere immediately above the stratosphere
The outermost layer of Earth's atmosphere.
Renewable energy sources
sources of energy able to be replaced through ongoing natural processes
Nonrenewable energy sources
a source of energy that exists in limited quantities and, once used, cannot be replaced except over the course of millions of years
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