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4A2 Science

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  • Page 81. What permits life to exist on Earth? Permit means to 'allow'.
    The sun.
  • Page 83. Name a material that is used to keep things warm and cold.
    Styrofoam
  • Page 80. Where does our blood circulate through?
    Blood circulates through our arteries and veins.
  • Page 80. What 2 categories are energy sources divided into?
    Renewable and Non-renewable energy sources.
  • Page 81. What kind of energy does the sun produce?
    Solar energy.
  • Page 82. What is heat?
    Heat is the name for the energy that is transferred and moved from warm substances to cooler ones.
  • Page 83. Name 2 examples of materials that insulate heat. (Stop things from getting cold)
    Cotton and wool.
  • Page 83. How can a napkin keep bread at a restaurant warm?
    The napkin helps prevent the heat from transferring from the bread to the air.
  • Page 81. What do solar panels do?
    It collects and stores heat from the sun and converts it into energy.
  • Page 81. What do some people us solar energy for?
    To heat their houses, warm their water, and even to cook!
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