Chapter 1 THE AIR AROUND US

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Chapter 1 THE AIR AROUND US

• AIR
• The invisible, odorless, and tasteless mixture of
  gases that surrounds Earth.
• NITOGEN
• A colorless, odorless, tasteless gas that makes
  up about four fifths of the air.
• OXYGEN
• A colorless, odorless, tasteless gas that makes
  up about one fifth of the air.
• CARBON DIOXIDE
• A colorless, odorless gas.
• WATER VAPOR
• Water that is in the form of a gas.

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• ATMOSPHERE
• The blanket of air that surrounds Earth, reaching
  to about 700km above the surface.
• TROPOSPHERE
• The layer of the atmosphere closest to the
  surface of the Earth.
• WEATHER
• The condition of the atmosphere at a certain
  place and time.
• GREENHOUSE EFFECT
• The process by which heat from the Sun builds up
  near Earths surface and its trapped by the
  atmosphere.
• WIND
• The movement of air over Earths surface.