Grade 8Sciencequiz16 questions

Heat transfer

Grade 8: conduction, convection, radiation, insulators reduce heat loss, temperature vs heat.

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Free to play. Teams answer on one screen; your phone is the remote. No student devices.

Questions

  1. How does heat travel through a solid metal spoon placed in hot soup?

    • Conduction
    • Convection
    • Evaporation
    • Radiation
    Show answerConduction

  2. Which material is the best conductor of heat?

    • Copper
    • Plastic
    • Rubber
    • Wood
    Show answerCopper

  3. In conduction, particles pass on vibrations to their neighbours. (True or false?)

    Show answerTrue

  4. Why does heat conduct better in metals than in gases?

    • Particles are bigger
    • Particles are closer together
    • Particles are colder
    • Particles do not move
    Show answerParticles are closer together

  5. Heat transfer by the movement of fluids is called what?

    • Conduction
    • Convection
    • Insulation
    • Radiation
    Show answerConvection

  6. When air is heated, what happens to its density?

    • It becomes zero
    • It decreases
    • It increases
    • It stays the same
    Show answerIt decreases

  7. Warm air rises above a radiator. What is this movement of air called? (Answer out loud)

    Show answerA convection current

  8. How does heat from the Sun reach Earth?

    • Conduction
    • Convection
    • Evaporation
    • Radiation
    Show answerRadiation

  9. Radiation needs particles of matter to carry heat from place to place. (True or false?)

    Show answerFalse

  10. Which surface is best at absorbing heat radiation?

    • Dull black
    • Dull white
    • Shiny silver
    • Shiny white
    Show answerDull black

  11. Why do woolly jumpers keep you warm?

    • They block cold particles
    • They conduct heat well
    • They create heat
    • They trap air, which insulates
    Show answerThey trap air, which insulates

  12. Name the type of material that is poor at conducting heat. (Answer out loud)

    Show answerAn insulator

  13. Why is a double-glazed window with a gap between the panes a good insulator?

    • Air conducts heat very well
    • Gaps let in more heat
    • Glass makes heat
    • Trapped air or gas conducts poorly
    Show answerTrapped air or gas conducts poorly

  14. What is temperature a measure of?

    • How fast heat is lost
    • How hot or cold something is
    • The mass of a substance
    • The total heat energy stored
    Show answerHow hot or cold something is

  15. A bathtub of warm water contains more heat energy than a cup of boiling water. (True or false?)

    Show answerTrue

  16. What unit is usually used to measure heat energy in science? (Answer out loud)

    Show answerJoule

Play it as a game

Team BingoEvery team has a bingo card of answers. Each answer is called after its question. Three in a row: BINGO +5.Memory MatchAnswer right to flip two cards. Find a word and its picture to win the pair (+2), then the class says the word.Mystery PictureEvery right answer removes a piece. Name the picture first for a big bonus.Tile GrabAnswer right to flip a tile. Points, stars, bombs and magnets that steal points.

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