Grade 7 Physics Quiz: Hot and Cold

What device is used to measure temperature?

• Voltmeter

• Anemometer

• Thermometer

• Barometer

What is the measure of average kinetic energy of all the particles in an object called?

• Kinetic energy

• Heat

• Thermal energy

• Temperature

What happens to the density of a fluid as it is heated?

• It decreases

• It increases

• It remains the same

• It doubles

Which method of heat transfer does not require matter?

• All of the above

• Radiation

• Conduction

• Convection

What is the process called when a liquid turns into gas below its boiling point?

• Freezing

• Sublimation

• Evaporation

• Condensation

Which of the following is a good conductor of heat?

• Copper

• Glass

• Plastic

• Wood

What is the primary reason a metal feels colder than wood at the same temperature?

• Metal is shiny

• Wood is warmer

• Metal conducts heat better

• Metal is heavier

What is the term for the transfer of heat through solids?

• Convection

• Radiation

• Conduction

• Insulation

Which of the following is an example of convection?

• A metal spoon in hot soup

• Sun warming the earth

• Warm air rising

• Ice melting

What is needed for heat to flow?

• Density difference

• Pressure difference

• Temperature difference

• Volume difference