Chapter 6: Study Guide
Explain how it would be possible for you to experience conduction, convection, and radiation at the same time.
BEACH conduction - touching sand convection - ocean breeze radiation - Sun
What type of heat transfer is happening between your feet and the sand?
Conduction
Which heat transfer? A dog staying warm on a heating pad
Conduction
Which heat transfer? Cooking popcorn on the stove
Conduction
Which heat transfer? Feeling hot sand on your feet at the beach
Conduction
Which heat transfer? Holding a hot cup of coffee
Conduction
Which heat transfer? Ironing a shirt
Conduction
The hotter air and smoke will rise and the cooler air will sink. What type of heat transfer does this represent?
Convection
Which heat transfer? A hot air balloon rising into the sky
Convection
Which heat transfer? Heat rising from a chimney
Convection
Which heat transfer? Macaroni rising and falling in boiling water
Convection
Which heat transfer? Moving wind or ocean currents
Convection
Which heat transfer? Steam rising from a cup of coffee
Convection
T or F? Chocolate melting in your hands is an example of convection.
False
T or F? Conduction most commonly occurs with liquids and gases.
False
T or F? Ice cubes, ice packs, and other freezing objects have no thermal energy.
False
T or F? In order for radiation to occur electromagnetic waves must travel through matter to transfer energy from one substance to another.
False
T or F? Steam rising from a bowl of hot soup is an example of conduction.
False
T or F? When you open the door to a refrigerator, thermal energy flows from the cooler air inside the refrigerator to the warmer air outside.
False
Your mom turned off the oven and left the oven door open. What will happen to the temperature of the oven over the next 30 minutes?
It will decrease until it reaches room temperature
Does radiation require matter to transfer energy?
No, it does not require matter because radiation travels in waves.
What type of heat transfer is represented when you sit in front of the fireplace to feel the warmth from the fire?
Radiation
Which heat transfer? Feeling the warmth from a fire
Radiation
Which heat transfer? Feeling the warmth of the sun on your face
Radiation
Which heat transfer? Heat given off from a light bulb
Radiation
Which heat transfer? Roasting a marshmallow over a flame
Radiation
Which heat transfer? The Sun heating the inside of a car
Radiation
A man is holding an ice cube in his hand. Describe what will happen in this situation and how thermal energy will flow.
The ice cube will melt because thermal energy flows from his hand to the ice.
What is heat?
The movement of atoms and molecules in a material
Heat moves between two substances until they both reach the same temperature. What is this process called?
Thermal Equilibrium
How does thermal energy flow?
Thermal energy flows from an object with more thermal energy to an object with less thermal energy.
T or F? A hot cup of coffee sitting on the counter will eventually reach room temperature after a few hours.
True
T or F? Convection does not occur in solids because the particles of solids are too tightly packed.
True
T or F? Copper wire and metal cooking utensils are good conductors of heat and electricity.
True
T or F? Heat always transfers from substances with more thermal energy to substances with less thermal energy until both substances reach the same temperature.
True
T or F? The particles of an object with more thermal energy move faster than the particles of an object with less thermal energy.
True
T or F? The three main types of heat transfer are conduction, convection, and radiation.
True
heat
a form of energy associated with the movement of atoms and molecules in a material
conductor
a material that allows heat and electricity to pass through it easily
insulator
a material that slows or stops the flow of energy and does not allow heat or electricity to pass through it easily
Identify and describe an example of conduction, convection, and radiation.
conduction - touching a cup of hot coffee convection - AC radiation - light
heat transfer
the movement of thermal energy from one substance to another
thermal equilibrium
the point when substances have reached the same temperature and heat no longer flows between them
conduction
the transfer of heat from one substance to another through direct contact
convection
the transfer of heat through currents caused by the warming and cooling of liquids and gases
radiation
the transfer of heat through electromagnetic waves
