Chemistry! Hooray!

Chemistry! Hooray!

Tuesday, 9 April 2013

Grade 7 Radiation Notes and Eureka Video

Radiation

·        Radiant energy is the transfer of energy by invisible waves given off by the energy source
·        These invisible waves are called infrared waves (a type of electromagnetic wave from the sun)
·        Infrared waves are given off by all heat sources, including you
·        Heat is radiant energy from the sun that reaches your skin
·        Radiant energy warms up objects when the waves of radiant energy come into contact with matter making the particles vibrate faster


Grade 7 Convection Notes and Eureka Video


Convection

·        Convection - The transfer of thermal energy by moving particles in fluids
·        As the particles of fluids (gases and liquids) are heated, they move faster and expand; this expansion makes the fluids less dense so they rise
·        When warmer fluids rise, cooler fluids move downwards; this creates a “convection current”
·        The convection current continues in a pot of soup because the warmer soup particles in a pot cool when they make contact with the air and then sink. These particles are heated again once they meet the bottom of the pot.
·        Convection currents help heat your home through your furnace heating system.

Thursday, 4 April 2013

Grade 6 Create a Creature Success Criteria


Create a Creature Success Criteria

·       A minimum of 3 invertebrates are researched
·       Physical characteristics relate back to the invertebrates you chose – explain what parts of your 3 invertebrates are included in your new species
·       The drawing resembles the invertebrates researched
·       All information about the invertebrates is accurate
·       The habitat relates to chosen invertebrates (doesn’t have to be all three)
·       The food your creature eats should relate somewhat to the invertebrates chosen e.g., a ant/fly/snail won’t eat a cow
·       A reasonable explanation for adaptations is included
·       Poster is organized with a title, subtitles, printed text and a neat drawing
·       Include a classification of the species – can be creative
·       Date and name
·       Use proper scientific terms
·       Write in a clear font
·       Include your sources!

Wednesday, 3 April 2013

Grade 7 Chapter 10 Study Guide


Please review the following for the text on April 15th:

Section 10.1

  • The 10 forms of energy
  • Examples of energy transformations

Section 10.2

  • Understand the difference between thermal energy, temperature, and heat
  • Review examples of renewable and non-renewable energy
  • Key Terms: fossil fuels, waste heat

Section 10.3

  • Review the 6 changes of state
  • How does the particle theory explains changes of state? (page 296)
  • Heat can affect the volume of solids, liquids, and gases - how does the particle theory explain this?
  • Provide examples of how we apply the knowledge of expansion and contraction of solids, liquids and gases; e.g., we leave spaces at the top of bottles to allow for the expansion of liquids if they are heated.

Section 10.4

  • Review the three types of heat transfer; conduction, convection, and radiation and provide examples of each
  • How do we apply our understanding of the three types of heat transfer, e.g, we wear oven mitts when taking hot things out of the oven.