Starter quiz
- The temperature of pure boiling water is ______°C.
- '100' ✓
- Human body temperature is normally about ______°C.
- '37' ✓
- What is the name of the temperature at which water changes from its solid state into its liquid state?
- boiling point
- evaporation point
- melting point ✓
- turning point
-
- At what temperature does pure water freeze, compared to the temperature at which pure water melts?
- It freezes at a lower temperature than it melts.
- It freezes at the same temperature as it melts. ✓
- It freezes at a higher temperature than it melts.
-
- To measure temperature of a beaker of water, the water is stirred and the ______ of a thermometer is put into the middle of it.
- 'bulb' ✓
- Which of the following describes the particles in iron in its solid state?
- stationary
- vibrating ✓
- fixed in place ✓
- not fixed in place
-
Exit quiz
- What does increasing the temperature of a metal in the solid state do to the particles it is made from?
- Nothing, they are fixed in position.
- Makes each one a little bit bigger.
- Makes them vibrate more vigorously. ✓
- Makes them move around more quickly.
-
- Why does a solid expand at higher temperatures?
- Its particles change shape.
- Its particles each become a little bit bigger.
- Its particles push each other slightly further apart. ✓
- Some of its particles move to new positions.
-
- In how many directions (out of length, width and height) does a metal bar expand when its temperature increases?
- 0
- 1
- 2
- 3 ✓
-
- Two different sized blocks of pure solid water (ice) are removed from a freezer at the same time. Which block of ice melts at the lowest temperature?
- the smaller block
- the larger block
- neither block ✓
-
- Why does a liquid expand when it is heated to a higher temperature?
- Its particles change shape.
- Its particles each become a little bit bigger.
- Its particles push each other slightly further apart. ✓
-
- Sort the following statements into the correct order to describe how a thermometer measures the temperature of some hot water.
- 1⇔Coloured liquid in the bulb of the thermometer is heated.
- 2⇔The coloured liquid expands as its temperature increases.
- 3⇔The coloured liquid rises up a narrow tube in the centre of the thermometer.
- 4⇔The higher its temperature, the higher it rises.
- 5⇔The height it rises to is measured on a scale that shows its temperature.
Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- If left for long enough, all objects in a room will reach the same temperature as the room.
- Heating a solid makes its particles vibrate more quickly.
- Heating a liquid makes its particles move around more quickly.
- Heating a solid or liquid causes the separation of its particles to increase.
- Heating a solid or liquid causes it to expand.
Common misconception
Pupils often think that the temperature of larger ice cubes is colder than smaller ones because they take longer to melt.
Emphasise that both a small and large ice cube are at the same temperature when they are in the same freezer.
Keywords
Expand - to increase in volume
Contract - to decrease in volume
Particle - the smallest part of a substance
Vibrate - to repeatedly and regularly move back–and–forth
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