Earth's Atmosphere: Form and Function, Earth's Atmosphere Lesson 1, Earth's Atmosphere Lesson 2, Earth's Atmosphere Lesson 3
Terms in this set (68)
Definition of Atmosphere
A thin layer of gases that surrounds the Earth.
Functions of the Atmosphere.
Chemicals needed for life.
Insulates the planet like a blanket.
Protects the planet from Meteors and harmful rays.
First Step in the development of the atmosphere.
Earth cools and water vapor cools and condenses to forms oceans.
Second Step in the development of the atmosphere.
Ocean dwelling life develops which use photosynthesis to survive.
Third Step in the development of the atmosphere.
The by-product of photosynthesis (oxygen) accumulates in the atmosphere over millions of years and current levels of gasses stabilize.
Percentage of nitrogen in the atmosphere.
Percentage of oxygen in the atmosphere.
Percentage of other gases in the atmosphere.
Solids and Liquids in the atmosphere.
Pollen, Dust, Salts, Pollution, Water Vapor
Distance of Exosphere from Earth.
Above 500 Km
Distance of Thermosphere from Earth
85 to 500 Km
Distance of Mesosphere from Earth
50 to 85 Km
Distance of Stratosphere from Earth
15 to 50 Km
Distance of Troposphere from Earth
Surface of the Earth to 15 Km
What happens in the Troposphere.
Weather occurs in this layer
This is located in the Stratosphere
The ozone layer
What happens in the Mesosphere.
Meteors burn up in this layer.
What is happens in the Thermosphere.
Auroras happen here.
Description of the Exosphere
The thinnest area of the atmosphere farthest from Earth where some molecules escape into space.
A molecule of oxygen made up of 3 oxygen atoms.
Function of Ozone
This molecule absorbs some of the harmful UV rays from the Sun.
Description of the Ionosphere.
The area of the atmosphere that stretches between the mesosphere and the thermosphere and contains electrically charged particles.
Temp in the Stratosphere
As altitude increases, temp increases.
Temp in the Troposphere
As altitude increases, temp decreases.
Relationship between Altitude and Air Pressure
As Altitude increases, Air Pressure decreases.
The thin layer of gases surrounding the Earth.
Water is its gaseous form.
Percent of the atmosphere that is Nitrogen.
Percent of the atmosphere that is Oxygen.
Other particles in the atmosphere.
Water Vapor, Argon, Carbon Dioxide, Ozone.
Solid Particles in the atmosphere.
Pollen, dust, salts, pollution (man-made and natural)
The layer of the atmosphere closest to the Earth where weather occurs.
The layer of the atmosphere that contains the Ozone Layer. It is found above the Troposphere.
This molecule absorbs the Sun's UV rays that would harm the Earth and its residents.
The region of the atmosphere with in the Mesosphere and the Thermosphere the contains ions. Auroras happen here.
Mesosphere and Thermosphere
The layers of the atmosphere that protect us from meteorites.
The outermost layer of the atmosphere that borders on space. Satelittes orbit the Earth in this layer.
Effect of Altitude on Air Pressure
As altitude increases, Air Pressure decreases.
How our current atmosphere was created.
Photosynthetic organisms in the ocean gave off oxygen which accumulated over millions of years.
The transfer of energy from EM waves.
The majority of energy that strikes the Earth is in this form.
Other forms of EM radiation that strike the Earth.
UV and IR
Percent of EM radiation that is absorbed by the particles in the atmosphere.
Percent of EM Radiation that is reaches the Earth and is absorbed.
Percent of EM Radiation that is reflected by the clouds and particles.
Percent of the EM Radiation that is reflected by land and sea surface.
Why the Earth doesn't keep getting hotter?
The amount of incoming radiation and outgoing radiation from the Earth is balanced.
How circulation patterns of air are created.
Air is heated and becomes less dense and rises. Cooler denser air moves in to replace it.
The movement of areas of HIGH pressure to areas of LOW pressure.
Green House Effect
The natural process within the atmosphere that traps converted EM radiation and keeps the planet warm.
What air does when it rises into the atmosphere.
Cools and condenses and forms clouds.
Unstable Air Effects
Thunderstorms and other severe weather.
These occur when cooler air is trapped beneath a layer of warmer air. It can trap pollution close to the surface of Earth.
The movement of air from areas of High Pressure to areas of Low Pressure.
The number of Wind Belts in each hemisphere of Earth.
Lowest Latitude Wind Belt
Starts at the equator and warm air rises and sinks back at about 30 degrees.
Highest Latitude Wind Belt
Cold dense air around the poles flows toward the Equator and pushes warmer air up at about 60 degrees.
Middle Latitude Wind Belt
The motion of this wind belt is driven by the two wind belts on either side of it.
The narrow band of high winds near the top of the Troposphere. It affects weather as it moves cold air around.
Winds in the lowest latitude wind belts that flow from East to West.
Steady winds in the middle latitude wind belt that blow from West to East.
Cold winds that blow from West to East near the Poles.
The effect of the Earth's rotation that causes moving air to appear to move or bend direction.
The wind that blows from the water toward the land during the day.
The wind that blows toward the water during the evening.
Causes of Sea Breeze
Land warms up faster and causes the air above it to rise. The air over the water is cooler and denser.
Cause of Land Breeze
Air over the water is warmed into the evening as the air over the land cools off faster.
the easiest word to spell