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Mapa Mental por Raegan Michelle, atualizado more than 1 year ago
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Criado por Raegan Michelle
aproximadamente 10 anos atrás
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CORE PHYSICS AQA
- ENERGY
- HEAT RADIATION
- Heat is transferred in three different ways; radiation, conduction, or convection.
- Infrared radiation is the emission
of elecromagnetic waves
- Radiation depends on an awful lot
on surface colour and texture
- Heat is transferred in three different ways; radiation, conduction, or convection.
- KINETIC ENERGY AND CONDUCTION
- Kinetic energy can
explain three states
of matter
- Conduction of heat
occurs mainly in solids
- Metals are good conductors
because of their free
electrons
- Kinetic energy can
explain three states
of matter
- CONVECTION
- Convection of heat - liquids and
gases only
- CONVECTION CURRENTS are all about
CHANGES IN DENSITY
- Convection of heat - liquids and
gases only
- CONDENSATION AND EVAPORATION
- Condensation is when gas turns to liquid
- Evaporation is when liquid turns to gas
- Rates of Evaporation and Condensation can vary
- THE RATE OF EVAPORATION/CONDENSATION
WILL BE FASTER IF:
- EVAPORATION
- Temperature is higher
- The average particle energy will be
higher, so more particles will have
enough energy to escape
- The average particle energy will be
higher, so more particles will have
enough energy to escape
- Density is lower
- The forces between the particles will
usually be weaker, so more particles
will have enough energy to overcome
these forces and escape the liquid
- The forces between the particles will
usually be weaker, so more particles
will have enough energy to overcome
these forces and escape the liquid
- Surface area is higher
- More particles will be near
enough to the surface to
escape the liquid
- More particles will be near
enough to the surface to
escape the liquid
- Airflow over the liquid is
greater
- The lower the concentration of an evaporating
substance in the air it's evaporating in to, the
higher the rate of evaporation
- A greater airflow
means air above the
liquid is replaced more
quickly, so the
concentration in the
air will be lower
- A greater airflow
means air above the
liquid is replaced more
quickly, so the
concentration in the
air will be lower
- The lower the concentration of an evaporating
substance in the air it's evaporating in to, the
higher the rate of evaporation
- Temperature is higher
- CONDENSATION:
- Temperature of the gas is lower
- The average particle energy in the gas is
lower, so more particles clump together
and form liquid droplets
- The average particle energy in the gas is
lower, so more particles clump together
and form liquid droplets
- Temperature of the surface the gas
touches is lower
- Density is higher
- The forces between these particles will be
stronger. Fewer particles will have enough
energy to overcome these forces and will instead
clump together to form a liquid
- The forces between these particles will be
stronger. Fewer particles will have enough
energy to overcome these forces and will instead
clump together to form a liquid
- Airflow is less
- The concentration of the
substance in the air will be higher,
so the rate of condensation will be
lower
- The concentration of the
substance in the air will be higher,
so the rate of condensation will be
lower
- Temperature of the gas is lower
- EVAPORATION
- THE RATE OF EVAPORATION/CONDENSATION
WILL BE FASTER IF:
- Condensation is when gas turns to liquid
- HEAT RADIATION
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