Lesson 1
Most abundant gas in the atmosphere.
What is nitrogen?
Amount of mass in a given volume.
What is density?
These are the four main layers of the atmosphere.
What are the troposphere, stratosphere mesosphere, and thermosphere?
The sun provides energy to this.
What is nearly all the Earth's atmosphere?
Measures temperature.
What is a thermometer?
Oxygen and nitrogen together make up 99 percent of dry air. This makes up most of the other 1 percent.
What is argon?
These are the properties of air.
What are pressure, mass, density, and volume?
These are the layers of the thermosphere.
What are the ionosphere and the exosphere?
The direct transfer of energy by electromagnetic waves.
What is radiation?
What is temperature?
The motions of the atmosphere are driven by this.
What is energy from the sun?
The two types of instruments used to measure air pressure.
What are the aneroid and mercury barometers?
This layer contains the ozone layer.
What is the stratosphere?
The ozone layer in the stratosphere absorbs this.
What is ultraviolet radiation?
Measures wind speed.
What is an anemometer?
This contains only gases.
What is pure air?
Most weather reports for the general public use this as a measurement.
What are inches of mercury?
This is the coldest layer.
What is the mesosphere?
Infrared radiation moves farther in the atmosphere before this happens.
Local winds form when this happens.
What is when large scale winds are weak?
Clouds form when this happens.
What is water vapor condenses out of the air to form tiny droplets of water or crystals of ice?
National Weather Service maps indicate air pressure in this.
These are caused when the sun strikes atoms in the ionosphere near the poles.
What are auroras?
These scatter short wavelengths.
Calm area at the equator where warm air rises.
What is a doldrum?