B.1 Thermal Energy and Matter

What is the measure of the average kinetic energy of molecules of a substance?

• Specific heat capacity

• Density

• Internal energy

• Absolute temperature

Which state of matter has the highest density?

• Gas

• Liquid

• Solid

• Plasma

What is the measure of the amount of energy required to increase the temperature of 1 kg of a substance by 1 K?

• Luminosity

• Thermal conductivity

• Specific latent heat

• Specific heat capacity

In which state of matter does convection happen best?

• Gas

• Liquid

• Plasma

• Solid

What is the transfer of energy by electromagnetic waves called?

• Thermal radiation

• Conduction

• Convection

• Latent heat

What is the theoretical object that absorbs all energy from all wavelengths of light from the electromagnetic spectrum?

• Grey body

• Black body

• White body

• Transparent body

What is the measure of the amount of energy emitted per second by a black body?

• Density

• Thermal conductivity

• Specific heat capacity

• Luminosity

What is the best conductor of thermal energy?

• Glass

• Wood

• Metal

• Plastic

What is the temperature at which molecules of an ideal gas have theoretically zero energy, zero pressure and zero volume?

• Freezing point

• Absolute zero

• Boiling point

• Room temperature

What is the measure of how much mass a substance has per unit volume?

• Density

• Thermal conductivity

• Specific heat capacity

• Luminosity