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Heat energy always moves from a _ _ _
place to a _ _ _ _ _ _ place. The three
methods of heat transfer are:
This type of heat transfer
only happens in this state
of matter:
This type of heat transfer
only happens in these two
states of matter:
Type of heat transfer where
heat energy is transferred
by particles to
neighbouring particles
A thermos flask is made from silvered glass and also
contains a vacuum. How does this help to keep the
contents of the flask hot/cold?
Heat transfer
Type of heat transfer where
heat energy is carried by
particles
Type of heat transfer that does not
require particles. Therefore can
happen in a vacuum.
The rising of hot air/liquid and the falling of cold air/liquid is
called a _ _ _ _ _ _ _ _ _ _ / _ _ _ _ _ _ _
Hot air/liquid rises
because:
Cold air/liquid sinks
because:
This type of heat transfer is affected by
the colour of surfaces.
These types of surfaces
absorb heat energy
How does double glazing
reduce heat loss in a
house?
These types of surfaces
reflect heat energy
The formation of convection currents is due to changes in
density. Density can be described as the _ _ _ _ _ _ _ _ _ of
_ _ _ _ _ _ _ _ _. The closer the particles the _ _ _ _ _ _ the
density.