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4 cards from this section. Quick, good the night before a test.
What is heat?
Think about how something hot feels when you touch it.
Define temperature.
Consider how we measure warmth or coldness.
What is the primary direction of heat transfer?
Consider how we feel warmth when we are near a heat source.
True or False: Specific heat capacity is the same for all substances.
Think about why water can absorb more heat than metals before changing temperature.
A 3 kg block of ice at -10°C is heated until it melts and then warms to 0°C. Calculate the total heat energy used. (Use specific heat for ice = 2.1 J/kg·K and latent heat of fusion = 334,000 J/kg)
Calculate each part step-by-step; remember to calculate the two stages separately.
Consider a room where hot air from a radiator rises to the ceiling and cool air sinks. This cycle continues. Explain how this demonstrates convection and its real-life implications.
Think about how this effect is utilized in heating systems.
7 more questions in this section. Enroll free to practise them all.
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