Heat Transfer

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

• Hotter to colder
• Colder to hotter
• Hotter to hotter
• Colder to colder

The type of heat transfer that happens through direct contact of molecules or particles with each other is ___________________.

• Convection
• Conduction
• Radiation
• insulation.

The kind of heat transfer that travels through space in electromagnetic waves is ______________________.

• insulation.
• Radiation
• Conduction
• Convection

___________________ is the type of heat transfer that occurs in fluids (gases and liquids), such as warm air rising and cold air sinking; creating wind.

• Convection

• Conduction

• Radiation

• insulation.

Which statement is true?

• The quicker a molecule moves, the colder it is.

• The slower a molecule moves, the warmer it is.

• The quicker a molecule moves, the warmer it is

• The movement of molecules don't affect temperature

When you use a microwave, what is the main way that heat is transferred?

• Convection
• Conduction
• Radiation
• insulation.

The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of

• Convection
• Conduction
• Radiation
• insulation.

Which of the following is the best example of conduction?

• A light bulb warming a lampshade
• An egg cooking in a frying pan
• Water boiling in a pot
• Gases circulating in the atmosphere

What kind of heat transfer happens when the sun is heating your body?

• Conduction
• Radiation
• Convection
• Density

Which of the following is an example of convection?

• A hair dryer is drying up your hair.
• When the AC or heater changes the temperature.
• When a car engine turns hot after being turned on.
• When you are making soup and the water is rising and lowering.