Heat and cooling Flashcards
What is Temperature?
Temperature is a measure of how hot or cold something is.
What is Degrees Celsius (°C)?
It’s a unit of measure.
What is convection?
This is the transfer of heat energy through the movement of the particles themselves.
What is conduction?
Is one of the ways in which thermal energy is transformed.
What is convection current?
Is a circular movement of hot gas or liquid , rising and cool gas or liquid falling.
What is evaporation?
The water evaporate because water particles have sufficient energy, are able to escape from the surface of the liquid.
Why does solid expands?
It expands because the particles vibrate more and take up more space.
What is contraction?
When a material gets smaller.
How does a solid gets smaller?
It gets smaller when it is cooled.
What is Infrared Radiation?
Carries thermal energy from a hotter object to a cooler object.
What is Radiation?
The transfer of thermal energy without particles.is like light
hot not cold
cold is the absence of thermal energy.
when the water boils…
it makes a circle (up and down)
in convection….
the particles move,transferring the thermal energy.
what are the change on state?
are melting,boiling and condensing and freezing.(liguids,solids,gases)
