Type of Transfer
Radiation
Conduction
Vocabulary
Let's Really Think!
100
Roasting marshmallows on an open fire.
Radiation
100
How is thermal energy transferred by radiation?
Through an empty space, without touching
100
What type of heat transfer happens when two objects are touching?
What is conduction
100
Thermal energy that is transferred only through liquids or gases
What is convection?
100
On a sunny day, your babysitter burnt her hand on a seatbelt buckle.
How would you explain to her how the buckle got hot?
The buckle got hot due to radiation. Heat waves from the sun went through the car window and warmed up the seatbelt buckle.
200
The handle of a metal spoon gets hot when you leave it in water.
Conduction
200
What colors tend to absorb the most radiation?
black or dark colors
200
Which of these materials is the best conductor. a. Aluminum (Metal) b. Glass c. Air
Aluminum
200
What is the transfer of thermal energy from a warmer object to a cooler object called?
Heat transfer
200
What does a higher temperature tell you about kinetic energy and particle movement?
Higher temperature → greater kinetic energy → faster particle movement.
300
The pavement heats up on a summer day.
Radiation
300
Why do white or light colors keep you cooler in the summer time?
They reflect radiation
300
In conduction, heat moves from areas that are ____________ to areas that are ___________.
warmer , cooler
300
Energy that is transferred from a warmer object to a cooler object is called
What is thermal energy?
300
A student obtains two cubes, one large and one small, that are made of steel. The student measures the temperatures of the cubes and finds that the large cube is at 80°C, and the smaller cube is at 40°C. The student places the smaller cube on top of the larger cube, as shown.
After several minutes, the student notices that both cubes are the same temperature. How does this occur?
Conduction occurred because the two cubes were touching. The warmth from the 80-degree cube transferred heat to the 40-degree cube
400
Macaroni swirls around in a pot of boiling water.
Convection
400
What is the Earth's biggest source of radiation?
The Sun
400
When something heats up, its molecules move...
faster
400
Movement from one place to another.
What is transfer?
400
A student is making a model to show how kinetic energy and particle movement change as a pot of water is heated from 20°C to 80°C.
How should the student explain how kinetic energy and particle movement change as temperature increases?
As temperature increases, the particles' kinetic energy increases, and the particles move faster.
500
The basement of our school is colder than the third floor.
Convection
500
Radiation is transferred through what?
Waves
500
A student holds one end of a metal spoon while the other end is placed in hot water. After several minutes, the student's hand feels warmer. How did thermal energy reach the student's hand?
Through conduction as thermal energy moved through the metal spoon.
500
The average kinetic energy of the particles in a substance?
What is temperature?
500
Two rooms separated by a closed door are at different temperatures.
If the door between the rooms is opened, and the temperatures are measured after one hour, what is the best prediction of the temperatures for Rooms X and Y?
The temperature in room X will decrease while the temperature in room Y will increase.