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What does the temperature of an object tell us about its particles?
ATheir average total number
BTheir average size in grams
CTheir average colour in light
DTheir average moving energy
Answer & Solution
Correct answer: D. Their average moving energy
1. Every particle in an object is moving or vibrating all the time.
2. Some particles move faster than others, so an average is taken.
3. Temperature measures the average movement energy of those particles.
4. A higher temperature therefore means faster moving particles on average.
5. Temperature is measured in degrees Celsius using a thermometer.
6. Heat is a different quantity, because heat is energy transferred, measured in joules.
7. The number of particles and their size are counted separately and are not temperature.
_Source: Siyavula Natural Sciences Grade 7 (CC BY 4.0), Heating as a transfer of energy_