Question

heat transfer worksheet
based on bbc bitesize: conduction, convection, radiation
research link: https://www.bbc.co.uk/bitesize/articles/zh63ydm#zcm6xdk

conduction
heat energy can move through a substance by __________.
in conduction, energy is transferred by the ________ of particles in a material from the hot region to the ________ region.

conduction happens fastest in __________ because the particles are close together.

materials which transfer energy easily by conduction are called __________
metals are very good conductors.

materials that do not transfer heat energy easily are called __________ (for example, air and many plastics).

convection

a fluid is a substance that can flow – either a ________ or a ________

when parts of a fluid are heated:

• the particles move faster
• the fluid becomes __________ dense
• the hotter fluid __________
• the cooler fluid __________

this sets up a continuous flow called a __________ current.

heat energy is transferred throughout the fluid by this movement from ________ regions to ________ regions.

convection cannot happen in __________

Explanation:

Answer:

conduction
vibrations; cooler
solids
conductors
insulators
liquid; gas
less
rises
sinks
convection
hotter; cooler
solids