NG1S242 (Quiz 2)

Energy has different forms which include:

• heat

• work

• all of the mentioned

• none of the mentioned

The transfer of thermal energy between objects of different temperatures is called

• Temperature

• internal energy

• heat

• work

Heat is measured in

• joules

• grams

• degree Celsius

• watts

Heat transfer _____ occurs from hot to cold naturally.

• never

• sometimes

• rarely

• always

The temperature of a glass of cold water will eventually

• match the temperature of the surrounding environment

• always be colder than the surrounding environment

• become warmer than the surrounding environment

• never change temperature

The specific heat of a substance is defined as the amount of heat required to raise a unit mass of the substance through a unit rise in temperature.

• true

• false

A substance with a high specific heat capacity

• is always extremely hot

• is not heavy

• requires a lot of energy to become hot

• Does not requires a lot of energy to become hot

The amount of heat needed to melt one kg of a substance is called

• specific heat

• sensible heat

• latent heat of vaporization

• latent heat of fusion

Which of the following is true?

• latent heat of fusion is not much affected by pressure

• latent heat of vaporization is highly sensitive to pressure

• specific heat capacity is affected by temperature

• all of the mentioned

The magnitude of mechanical work is the

• product of the force and distance travelled perpendicular to the force

• product of the force and distance travelled parallel to the force

• sum of the force and distance travelled perpendicular to the force

• sum of the force and distance travelled parallel to the force