Energy and Specific Heat Capacity Quiz

Which material requires more energy to heat up by 1°C: 1 kg of water or 1 kg of aluminium?

• 1 kg of water

• 1 kg of aluminium

• Both require the same energy

• It depends on the container

If you want to increase the temperature of 1 kg of water and 1 kg of aluminium by the same amount, how much more energy does water require compared to aluminium?

• Nearly five times as much

• Twice as much

• The same amount

• Half as much

Water requires more energy than aluminium to increase its temperature by 1°C because:

• Water has a higher specific heat capacity than aluminium

• Aluminium is a better conductor of heat

• Water is denser than aluminium

• Aluminium has a higher specific heat capacity than water

Which of the following best defines the specific heat capacity of a substance?

• The amount of energy needed to change the temperature of 1kg of the substance by 1°C.

• The amount of energy needed to melt 1kg of the substance.

• The amount of energy needed to boil 1kg of the substance.

• The amount of energy needed to freeze 1kg of the substance.

Based on the table, which substance would require the most energy to increase the temperature of 1kg by 1°C?

• Water

• Oxygen

• Lead

• All require the same amount of energy

Why is water particularly useful for storing and transporting heat energy, such as in central heating systems?

• Because it has a high specific heat capacity

• Because it is a good conductor of electricity

• Because it freezes at a low temperature

• Because it is denser than most substances

Which substance from the table would be the best choice for storing a large amount of heat energy with minimal temperature change?

• Oxygen, because it is a gas and can move easily.

• Lead, because it is a metal and conducts heat well.

• Water, because it has the highest specific heat capacity and can store more energy per kilogram per degree Celsius.

• Oxygen, because it has a lower specific heat capacity.

Which of the following equations correctly represents the relationship for energy transferred in terms of mass, specific heat capacity, and temperature change?

• Energy transferred = mass x specific heat capacity x temperature change

• Energy transferred = mass + specific heat capacity + temperature change

• Energy transferred = mass / specific heat capacity x temperature change

• Energy transferred = mass x specific heat capacity / temperature change

If the mass of an object is doubled while keeping the specific heat capacity and temperature change constant, how does the energy transferred change?

• It is halved

• It remains the same

• It is doubled

• It is tripled

Given the equation Energy transferred = m c ΔT, what does the symbol 'c' represent?

• The mass in kilograms

• The specific heat capacity in J/(kg°C)

• The temperature change in °C

• The energy transferred in joules