Lesson 1
How many oxygen molecules does oxygen have
Two. O2
The amount of mass (stuff) in a given volume
Density
Weather occurs in what layer of the atmosphere?
Troposphere
What causes winds?
Winds are caused by the unequal heating of Earth which causes air temperature and pressure differences
How is temperature measured?
Thermometer
Three. O3
Distance above sea level
Altitude
In what layer is the Ozone Layer
Stratosphere
How do local and global winds differ?
Global winds occur over a large area
A cup of water at 100 degrees or a hot tub with water at 100 degrees
Hot tub
What is the composition of Earth’s atmosphere?
Earth’s atmosphere consists of nitrogen, oxygen, carbon dioxide, water vapor, and other gases, as well as particles of liquids & solids
What are some properties of air?
Air has mass, density, and pressure
What are the five layers of the Atmosphere?
Thermosphere, Stratosphere, Mesosphere, Thermosphere, & Exosphere
What are the two types of local winds
Land and sea breeze
Heat always transfer from
hot to cold
What percent of Nitrogen, Oxygen, and Carbon Dioxide is in the atmosphere?
Nitrogen = 78% Oxygen = 21% Carbon Dioxide = Less than 1%
Even though there is always the same percentage of gas molecules, the number of gas molecules decreases the higher you go up
What are the characteristics of the Mesosphere?
Third, Middle layer of atmosphere, coldest layer, and burns meteoroids up because of friction
How does the energy from the Sun travel to Earth?
Most of the energy travels to Earth as visible and infrared radiation, and a little bit of ultraviolet radiation
What is the freezing & boiling point of water?
Boiling = 212° Freezing = 32°
How is the atmosphere a system?
Events in one part of the atmosphere affect other parts of the atmosphere
How does altitude affect air pressure, density, and the percentage of air molecules?
As you increase in altitude, pressure and density decreases, while gas molecules always stay the same, 78% nitrogen, 21% oxygen, less than 1% carbon dioxide
How does the Ozone layer protect us?
The Ozone Layer, specifically the gas Ozone, absorbs energy from the Sun which keeps the atmosphere warm and protects us from the Sun’s harmful ultraviolet radiation
Some of the sunlight is absorbed or reflected by the atmosphere, while the rest reaches Earth’s surface
What happens to the Sun’s energy when it reaches Earth?
How is heat transferred?
Heart is transferred from the warmer object to a cooler object via conduction, convection, and radiation