P5 Science · Chapter 13brightbit.net/worksheets
Heat
Name: ______________________Class: ________Date: ____________Score: ____ / 10
- 1.
What is the difference between heat and temperature?
(a) They are the same thing(b) Heat is a form of energy; temperature is a measure of how hot or cold something is(c) Temperature is energy; heat is a measure(d) Heat is measured in degrees; temperature is measured in joules
- 2.
Heat always flows from a _____ object to a _____ object.
(a) Cooler, hotter(b) Hotter, cooler(c) Larger, smaller(d) Smaller, larger
- 3.
What is conduction?
(a) Transfer of heat through a liquid by currents(b) Transfer of heat through direct contact between particles(c) Transfer of heat through empty space as waves(d) Transfer of heat by the movement of heated material
- 4.
Why are metals good conductors of heat?
- 5.
What is convection?
(a) Heat transfer through solids by particle vibration(b) Heat transfer through liquids and gases by movement of the heated material itself(c) Heat transfer through space by waves(d) Heat transfer by direct touch
- 6.
What is radiation?
(a) Heat transfer through particle collision(b) Heat transfer through currents in fluids(c) Heat transfer through electromagnetic waves that can travel through a vacuum(d) Heat transfer through conductors only
- 7.
Why do dark-coloured surfaces absorb more heat than light-coloured surfaces?
- 8.
When a metal rod is heated at one end, the other end eventually becomes hot too. Which method of heat transfer is this?
(a) Convection(b) Radiation(c) Conduction(d) Evaporation
- 9.
Why does a thermos flask keep drinks hot or cold for a long time?
- 10.
Why does a metal chair feel colder than a wooden chair in the same room?
(a) The metal is actually at a lower temperature(b) Metal conducts heat away from your body more quickly than wood(c) Wood is a heat source(d) Metal stores cold air in its particles
Answer key — P5 Science: Heat
For parents. Step-by-step explanations for every question are free on brightbit.net.
- 1.(b) Heat is a form of energy; temperature is a measure of how hot or cold something is
- 2.(b) Hotter, cooler
- 3.(b) Transfer of heat through direct contact between particles
- 4.Metals have free electrons that move quickly and transfer heat energy rapidly throughout the material
- 5.(b) Heat transfer through liquids and gases by movement of the heated material itself
- 6.(c) Heat transfer through electromagnetic waves that can travel through a vacuum
- 7.Dark surfaces absorb more radiation (reflect less); light/white surfaces reflect more radiation and absorb less
- 8.(c) Conduction
- 9.The double-walled vacuum prevents conduction and convection; silvered walls reduce radiation; the stopper prevents convection and evaporation
- 10.(b) Metal conducts heat away from your body more quickly than wood
Free worksheet from BrightBit · more free P1–P6 worksheets at brightbit.net/worksheets