WorksheetsIntroduction to Thermal Energy
Total questions: 15
Worksheet time: 15mins
Where is water the least dense in a pot of boiling water?
Closest to heat source
Farthest from heat source
Density doesn't change
A light can be used to keep food warm because it transfers thermal energy by __________.
conduction
convection
radiation
brightness
Kinetic energy is the energy of ______.
Motion
Position
Reaction
Sound
Which of the following is an example of convection?
A hair dryer is drying up your hair.
Boiling spaghetti noodles in water
When a car engine turns hot after being turned on.
When the AC or heater changes the temperature
When a frying pan is touching a stove that is on, what heat transfer is happening?
Radiation
Conduction
density
Convection
Hot air balloons rise because the heated air is less dense than cold air, so as the warm rises as the molecules spread out. The cold air is pushed downward, where it is also heated and rises. This swirling movement of air is called...
convection
radiation
insulation
conduction
The type of heat transfer that creates currents in water is called ________.
conduction
radiation
convection
density
Transfer of thermal energy through "flow" of liquids or gasses
conduction
convection
radiation
What are the methods of thermal energy transformation?
heat or electricity is directly transmitted through a substance
use energy electromagnetc (waves sun)
have tempratures warms/high temperatures
all are correct
What kind of heat transfer is occurring when the sun warms the sand?
Conduction
Convection
Radiation
Density
What heat transfer happens when you burn your finger by touching a fire?
Convection
Radiation
Conduction
Gravity
Walking on the warm sand with your bare feet demonstrates this type of heat transfer.
conduction
radiation
convection
insolation
What is thermal energy?
The energy stored in the bonds of chemical compounds
The energy an object possesses due to its motion
The total kinetic energy of particles in a substance
The energy required to change the state of a substance
Which of the following is an example of thermal energy transfer?
A car accelerating on a highway
Ice melting in a glass of water
A magnet attracting iron filings
A plant photosynthesizing sunlight
In an experiment, a metal rod is heated at one end. What is the primary method of heat transfer through the rod?
Radiation
Convection
Conduction
Evaporation
