Heat Flashcards
The u-value of a structure is reduced by adding insulation to it.
U-value refers to Unit Heat Loss Rate. A good insulation structure there has a low u-value
On a hot day, the sea is usually colder than the land.
Large bodies of water like oceans have a higher thermal capacity than land due to their immense density. As a result, it takes up to four times the amount of heat to raise the temperature of a given amount of land by equivalent degree.
State two characteristics of a thermometer suitable for use in this experiment
Small heat capacity, graduated to 0.1 degrees Celsius, suitable range, reacts quickly.
Explain why heat does not travel through solids by means of convection.
The particles cannot move freely
What is the principle of a heat pump?
Transfers heat from a cooler region to a warmer region.
Describe how the mass of added ice was measured.
(Mass of calorimeter + water + melted ice) - (mass of calorimeter + water)
Describe how it was ensured that the temperature of all the added ice was at 0.0 degrees Celsius.
The ice was crushed and melting.
State two ways in which the calorimeter could have been insulated during this experiment.
Named insulator wrapped around the calorimeter and a lid.
State two characteristics of a thermometer suitable for use in this experiment.
Small heat capacity, graduated to 0.1 degrees Celsius, suitable range, reacts quickly.
