Thermal Energy 1
Thermal Energy 2
Thermal Energy 3
Thermal Energy 4
Thermal Energy 5
100
Which type of heat transfer happens when you burn your hand on the stove?
What is conduction?
100
Movement of thermal energy from a warmer object to a cooler object.
What is Heat Transfer
100
Sunlight heating the pavement on a sunny day is an example of.
What is radiation
100
Material through which thermal energy flows easily.
What are conductors
100
Which type of heat transfer happens when you get a sunburn during a baseball game?
Radiation
200
A friend tells you that insulation keeps out the cold. Explain why this statement is incorrect.
Heat is transferred from hot to cold. So insulation actually keeps the warm in, not the cold out.
200
What state(s) of matter are fluids?
What are liquids and gasses?
200
As temperature decreases, the density of a substance will typically_________.
What is increase.
Lower temperatures cause the molecules of a substance to slow down and move closer together, occupying less space and increasing density.
200
Thermal energy depends on the ______
What is the mass and temperature
A snowman has more thermal energy than a mug of hot cocoa
200
Why does your hand feel cold when you holding an ice cube?
What is your hand is losing thermal energy heat because it is transferring into the ice cube
300
You are supposed to get low toward the floor if you are ever caught in a building or house fire. The hotter air and smoke will rise and the cooler air will sink. What type of heat transfer does this represent?
What is Convection?
300
Cookie feels the heat from his heat lamp.
What is radiation
The heat lamp uses UVA and UVB waves to act like the sun.
300
What type of heat transfer occurs from molecular collisions
What is conduction
300
Objects that do not make good conductors may be good?
Insulators
300
What travels in waves
What is radiation?
400
The Three ways thermal energy is transferred are...
What is Radiation, Conduction, Convection
400
The heat travels up the spoon
What is conduction?
400
Heat rising and cooling to form currents in a fluid
What is convection?
400
Fill in the blanks
a) Radiation
b) Convection
c) Conduction
400
True or False
Heat moves from cooler objects to warmer objects
What is False
Heat transfer occurs from Hot to cold
500
Is this convection, conduction or radiation.
What is all three
The fire gives off heat waves- radiation
The burning logs are conducting
The air above the fire has circulating currents- Convection
500
Transfer of thermal energy between materials by direct collision of particles.
What is Conduction
500
Which is a better conductor: plastic, wood, or metal?
Metal
500
Why do homes in warm climates often have white roofs?
Prevent radiation by reflecting light/heat off the house
500
Particles more the quickest in_____
a. solid
b liquids c. Gases
What is b- liquids
600
True or false. Does hot cocoa heat the surrounding air?
True
600
Where can convection occur?
What are liquids and gases
600
Explain why convection currents happen.
Air rises when heated because it becomes less dense. Cooler air sinks because it is more dense, creating a cycle.
600
Radiation is transmitted in______.
What is through space and waves
600
Which of the following does NOT move thermal energy through convection currents?
a-the ocean b-molten rock
c- mountains
What is c-mountains
Convection currents only occur in liquids and gases.