Science

6th

grade

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Convection Currents

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  • 1. Multiple Choice
    2 minutes
    1 pt
    At the seashore late in the afternoon on a hot day, a person often feels a strong breeze coming from the ocean because...
    the pounding waves generate air currents
    warm air over the ocean rushes in to replace the cool air that rises over the land
    the heavy, cool air over the ocean rushes in to replace the warm air that rises over the land
    there are no clouds to block the wind coming in from the ocean
  • 2. Multiple Choice
    30 seconds
    1 pt

    Heat transfer by convection is caused by differences in what two things:

    Thickness and material

    Weight and electricity

    Temperature and pressure

    Mass and density

  • 3. Multiple Choice
    45 seconds
    1 pt
    The main reason that we have currents in the ocean and air is
    the sun heats the air and ocean evenly everywhere
    the heat inside the earth heats the ocean and the ocean heats the air
    the sun cannot heat both the air and water, so one must heat the other
    the sun heats air and water more at the equator because it receives more direct sunlight
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