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Search Results for convection - All Grades

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Grade 9 Heat Transfer
Grade 7 Earth's Layers
Convection current is
  1. transfer of heat energy in a fluid.
  2. movement of material caused by differences in temperature.
  3. direct transfer of heat energy from one substance to another.
Grade 8 Heat Transfer
What is convection?
  1. Transfer of heat by the movement of currents within a fluid
  2. Transfer of heat from one particle to another without the movement of matter
  3. The transfer of energy by electromagnetic waves
  4. A conductor
  5. An insulator
Continuing Education Kitchen Equipment and Tools
A convection oven                                               .
  1. cooks faster than a microwave oven.
  2. cooks exactly the same as a conventional oven.
  3. is the only part of a range.
  4. uses a fan to help circulate the heat.
Grade 6 Heat Transfer
Grade 6 Heat Transfer
Convection takes place in                  .
  1. solids only
  2. gases only
  3. liquids only
  4. gases and liquids
Grade 8 Physics
Grade 6 Atmosphere
Convection currents in the atmosphere are driven by
  1. energy from the Sun.
  2. Earth's rotation.
  3. precipitation.
  4. ocean currents.
Grade 6 Atmosphere
When convection occurs in the atmosphere
  1. cold air rises and warm air sinks.
  2. warm air rises and cold air sinks.
  3. warm air rises and cold air rises.
  4. both cold and warm air sink.
Grade 9 Heat Transfer
Convection will most likely occur through
  1. solids and liquids.
  2. gases only.
  3. liquids and gases.
Grade 4 Heat Transfer
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