The Atmosphere
The layer of the atmosphere where most weather takes place
What is the troposphere?
Because air has mass it also has ________ and ________
What are density and pressure?
The force exerted by the weight of air molecules
What is air pressure?
A spectrum of light caused by the sun shining into water droplets
What is a rainbow?
The second most abundant gas in the atmosphere
What is oxygen?
Forms of water that fall from the clouds
What is precipitation?
Caused by the tilt of the Earth on its axis
What are seasons?
A weather event where a convection cloud sends a column of rapidly rotating air down to the ground
What is a tornado?
The gas that makes up 78% of the atmosphere
What is nitrogen?
A scientist who studies weather
What is a meteorologist?
The measure of the amount of water vapor in the air
What is humidity?
A cloud that touches the ground
What is fog?
Something the atmosphere helps protect us from
What is the sun's ultraviolet radiation?
Where a mass of warm air moves in to replace a mass of cold air
What is a warm front?
Caused by air moving from a high pressure area to a low pressure area
What is wind?
An electrical charge created by the collision of ice crystals in a storm cloud
What is lightning?
The gas that absorbs heat energy in the stratosphere
What is ozone?
The observed atmospheric conditions at any given time in a particular location or small region
What is weather?
The type of pressure system that usually brings cloudy or rainy days
What is low pressure system?
An atmospheric optical phenomenon that creates a halo effect from the refraction of sunlight by ice crystals
What is a sun dog?