What is Air?

1
What is Air?

• Investigation 1 2

2
WORD BANK

• Pressure (n) the push when compressed air pushes
  back
• Compressed (v. adj.) forced into a smaller space

3
WORD BANK

• Atmosphere the gases surrounding earth
• Meteorology the scientific study of Earths
  weather
• Meteorologist a person who studies the weather
• Severe Weather weather that is dangerous or
  causes damage
• Forecast a prediction about what kind of
  weather to expect
• Weather factors properties of air that affect
  weather

4
WORD BANK

• Matter the substance things are made of (like
  atoms, molecules)
• Mass the amount of matter in an object
• Weight the force an object exerts (puts out)
  because of gravity

5
NOTES

• Two gases that are the most plentiful in the
  atmosphere
• Nitrogen (N2)
• Oxygen (O2)
• Two gases that are variable and only found in the
  troposphere
• Carbon Dioxide (CO2)
• Water Vapor (H2O)

6
WEATHER TOOLS
INSTRUMENT FACTOR MEASURED UNIT USED
Thermometer Temperature C or F
Barometer Air pressure Millibar (mb)
Hygrometer Humidity Percentage ()
Anemometer Wind speed mph
Wind Vane Wind direction Cardinal directions (N,S,E,W)
7
WEATHER TOOLS
INSTRUMENT FACTOR MEASURED UNIT USED
Thermometer
Air pressure
Hygrometer
Wind speed
Wind Vane