WorksheetsHeat Transfer Processes
Total questions: 25
Worksheet time: 21mins
If you walk barefoot on hot asphalt, energy is transferred by which process?
Convection
Radiation
Conduction
Reflection
Throughout the day, Matthew and Mei measure the temperature of lake water as it is warmed by the sun. The following table shows their data at four different times.
At what time was the thermal energy of the lake water the greatest?
9 a.m.
11 a.m.
3 p.m.
5 p.m.
Kumar is studying how Earth is warmed by sunlight. The following illustration shows his model of the sun and Earth.
Which process is mostly responsible for warming the soil in Kumar’s model?
Conduction between the lamp and the soil causes the soil to warm.
Convection currents between the lamp and the soil cause the soil to warm.
Expansion of particles in the soil causes the soil to warm.
Radiation from the lamp reaches the soil and causes the soil to warm.
Energy is transferred as heat between two objects of ___________ temperatures.
differing
same
Which of the following is an example of heat transfer by conduction?
sunlight hitting a floor
an electric stove heating an iron pan
a wood stove heating nearby objects
an electric heater heating air, which rises and is replaced with cooler air
When one end of a short metal bar is heated, the opposite end will eventually become hot.
Which of the following processes transfers the heat through the bar?
radiation
convection
conduction
condensation
Compared to the particles in a hardened lava sample, the particles in a liquid lava sample
are moving faster.
are closer together.
have less kinetic energy.
have a lower temperature.
How do you know when the transfer of thermal energy has ended?
It never ends.
When one substance begins to boil.
Both objects reach the same temperature.
When you can measure the amount of heat.
Warm air molecules are faster than cool air molecules.
True
False
Feeling heat from a car that is turned on is an example of ________
conduction
convection
radiation
A pond being warmed by the sun is an example of ___________.
convection
conduction
radiation
Ocean currents are an example of __________.
conduction
convection
radiation
Which of the following would make a good conductor of thermal energy?
a cotton glove
a wooden pencil
a metal pan
a strawberry
What conditions are necessary for heat conduction to occur between two objects?
The objects must be surrounded by air or water.
Two objects at different temperatures are touching one another.
Two objects at different temperatures are located close to one another.
One object must emit energy as light and heat and another object absorbs the energy.
The heat from the lamp allows this lizard to remain warm. This is an example of which type of heat transfer?
radiation
convection
conduction
Which is an example of radiation?
warming food in the microwave
warming food on the stove
cooling food in the freezer
than in hot things.
How is energy from the Sun transferred?
by radiation
by conduction
by convection
by the force of gravity
__________ is the transfer of heat by the movement of a fluid.
Conduction
Convection
Radiation
