7th Grade Chapter 5 Lesson 4

7th Grade Chapter 5 Lesson 4

• 1.
  7 th Grade Chapter 5 Lesson 4 Pgs. 178-183 For Student Use Only
• 2.
  The Motion ofAir Wind- movement of air from one place to another in a horizontal motion. Updraft, Current, and Downdraft- wind moving vertically Wind- has kinetic energy
• 3.
  Energy Sun- sourceof all heating Radiant Energy is converted into kinetic energy (to heat) Earth and Water release heat energy
• 4.
  Energy Temperature FactorWinds= a direct result of the temperature differences that exist across the surface of the Earth Different surfaces heat differently Some surfaces reflect light and some absorb light Remember darker surfaces absorb more than lighter surfaces Different areas of the Earth heat differently The angle of the sun is more direct at different areas
• 5.
  Heat Energy Albedo-the percentage of radiation that is reflected Color is determined by the amount of light that is reflected Black absorbs colors White reflects all colors Dark heats up more quickly than light
• 6.
  Heat Energy Threedifferences between land and water 1. Water is somewhat transparent but land is not 2. Land is a solid but water is a liquid 3. Water has a much greater heat capacity than land
• 7.
  Difference between soiland water 1. Water is somewhat transparent but land is not Radiant energy heats water differently from soil Movie Notes: A Look at How Land Heats up
• 8.
  Difference between soiland water 2. Land is a solid but water is a liquid Molecules of solid do not move, but liquids do move and heat up quickly Liquids create convection currents (warm fluids rise and cool fluids sink) Movie Notes: Surface Wind and Convection Currents
• 9.
  Difference between soiland water 3. Water has a much greater heat capacity than land - Heat Capacity- a substance is the amount of energy needed to raise its temperature by one degree Movie Notes: Heat Capacity
• 10.
  Heat Capacity Thesedifferences make different objects heat up differently It is important that water heat up slowly Our bodies are water Our Earth is water