Keeping Warm Flashcards
What happens to the particles in a solid when the solid gets warmer
Vibrate more
One end of a metal bar is heated what is the name for the way energy is transferred along the bar
Conduction
What kind of materials that are good thermal insulators
Metals
Name two materials that are good thermal insulators
Plastic and wool
What is the name for the way in which energy is transferred in a fluid
Convection
What causes a convection current
Warm fluid rises
Materials that contain trapped air are good insulators why does air need to be trapped
So it can not transfer energy by convection
How does warmth from the sun reach the earth
Radiation
Will a black car or a white car get hotter On a sunny day
Black
Name one thing a homeowner can do to reduce the money they spend on heating
Fit double glazing windows
What does absorb mean
To soak up or take in
What does conduction mean
The way energy is transferred through solids by heating . Vibrations are passed on from particle to particle
What does convection mean
The movement of particles in a fluid depending on their temperature. Hotter less dense regions rise and cooler denser regions sink
What does emit mean
To give out
Fluid
A liquid or gas
Infrared radiation
Another name for energy that travels by radiation. It can travel through transparent things and a vacuum or empty space
Insulation
A material that does not allow something heat or electricity to pass through it
Radiation
A way of transferring energy by heating
Thermal conductivity
A measure of how easily energy can pass through a material by heating . A material with low thermal conductivity Is a good insulating material
Thermal conductor
A material that allows energy to be transferred through it easily by heating
Thermal insulators
A material that does not allow energy to be transferred through it easily by heating
