Heating and Cooling Homework Tasks

Spellings and Definitions

Task 1

Task 2

Task 3

Revision Task

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Spellings and Definitions

boiling pointTemperature at which a liquid turns into a gas
conductionTransfer of heat by particles hitting each other
conductorA material that lets heat flow through it
contractGet smaller because particles get closer together
convectionThe transfer of heat through fluids by the movement of particles
convection currentParts of a liquid that moves because of a difference in density
densityThe number of particles in a particular space (measured in g/cm3)
energyThe ability to do work
expandGet bigger because particles get further apart
fluidA liquid or a gas
heatType of energy linked to particle movement
insulationSomething that stops heat leaving an object
insulatorA material that does not let heat pass through it
melting pointTemperature at which a solid turns into a liquid
particleSThe very small objects that solids, liquids and gases are made up of
radiationThe transfer of heat through a vacuum
temperatureHow hot an object is; how much energy it has got
thermalTo do with heat energy
thermometerA piece of equipment used to measure temperature
vacuumA space that contains no particles

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Task 1

Learn the spellings and definitions of the key words for the topic.

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Task 2

Either:

Find out values for the temperatures of the following (in ºC):
Freezing water
Boiling water
Room temperature
Coldest place on Earth
Hottest place on Earth
Inside a hot oven
Inside a fridge
Inside a freezer
Outside during spring
Outside during summer
Outside during autumn
Outside during winter
Body temperature
Lowest possible temperature

Produce a bar chart or temperature line of what you find out.

Or:

Find out about different types of thermometers. What temperature ranges do they measure? When and where are they used?

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Task 3

Each statement is false. Rewrite each one as a true statement, showing as much scientific understanding as possible.

  1. The normal temperature of the human body is 57ºC
  2. Convection makes a metal bar get hot along its whole length
  3. Melting is changing from a liquid to a solid
  4. When there is a difference in temperature, heat disappears
  5. A thermal insulator allows heat energy to flow easily through it
  6. Copper is a good insulator
  7. Plastic is a good conductor
  8. When a substance expands, the particles get larger
  9. Energy is transferred from the Sun to the Earth by reflection
  10. When a substance expands it gets more dense

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Revision Task

Either:

Make a spider diagram using the key words. Explain each link.

Or:

Pair up the key words, explaining the reason for the link.

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