Unit 5

• Sub-atomic particles


  • Protons
  • Neutrons
  • Electrons
• Deflected


  Turned aside from a straight course
• Electrical charge


  A fundamental property of some subatomic particles
• Electrons


  Negatively charged sub-atomic particles
• Electrostatic attraction


  The force that attracts oppositely charged particles
• Neutrons


  Uncharged sub-atomic particles
• Nucleus


  The dense central core of an atom
• Protons


  Positively charged sub-atomic particles
• Sub-atomic particles


  Smaller particles that make up atoms
• Carat


  A unit of measurement for the purity of gold
• Translucent


  Allowing light to pass through but not transparent
• Atmosphere


  The layer of gases surrounding the Earth
• Climate


  The long-term pattern of weather in a particular area
• Climatology


  The scientific study of climate
• Humidity


  The amount of water vapour in the air
• Meteorology


  The scientific study of the atmosphere and weather
• Visibility


  The distance at which objects can be clearly seen
• Weather


  The day-to-day conditions of the atmosphere
• Cycle


  A series of events that repeat in a regular pattern
• Glacial period


  A period of time when glaciers cover large areas of the Earth's surface
• Glaciers


  Large, slow-moving rivers of ice
• Ice ages


  Periods of time when the Earth's climate was much colder and glaciers covered large areas
• Interglacial period


  A period of time between ice ages when the climate is warmer
• Peat log


  Partially decomposed plant material found in bogs
• Bioplastics


  Plastics made from renewable biological sources
• Deforestation


  The clearing of forests
• Emissions


  Substances discharged into the atmosphere
• Fossil fuels


  Fuels formed from the remains of ancient organisms
• Global warming


  The long-term rise in the Earth's average surface temperature
• Greenhouse effect


  The trapping of heat in the Earth's atmosphere
• Locked up


  Stored or contained
• Photosynthesis


  The process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen
• Renewable resources


  Natural resources that can be replenished or replaced
• Atom structure:

  A) Electron orbits

  B) Neutron

  C) Proton

  D) ELectron

  E) Nucleus

  
• Protons and neutrons have much more mass than electrons
• Electrons have almost no mass
• Protons and neutrons have the same mass
• Protons have a positive electrical charge
• Neutrons have no electrical charge
• Electrons have a negative electrical charge