Science

What is the SI unit of heat?

• Joule

• Calorie

• Kelvin

• Watt

Temperature is a measure of:

• Total energy of a system

• Kinetic energy of molecules

• Potential energy of molecules

• Work done by a system

Which instrument is used to measure temperature?

• Barometer

• Thermometer

• Calorimeter

• Anemometer

What happens to the temperature of a substance during a phase change?

• Increases

• Decreases

• Remains constant

• Doubles

Which mode of heat transfer requires a medium?

• Conduction

• Convection

• Radiation

• Both a and b

Which of the following is an example of convection?

• Sun’s heat reaching Earth

• Heating water in a pot

• Heat transfer through a metal rod

• Infrared waves from a heater

Which material is the best conductor of heat?

• Wood

• Copper

• Plastic

• Rubber

What is the specific heat capacity of water?

• 1 J/kg K

• 4.18 J/g K

• 0.5 J/g K

• 10 J/kg K

Which of the following expands the most when heated?

• Solids

• Liquids

• Gases

• All expand equally

What is the process by which heat is transferred without the movement of particles?

• Conduction

• Convection

• Radiation

• Sublimation