Gcse (AQA) physics P1 Practice Questions Solved Correctly.
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Course
GCSE Physics
Institution
GCSE Physics
how is heat transferred from place to place? - Answer conduction, convection, radiation
What surface is better at absorbing heat? - Answer dark matt surfaces
what surface is better at reflecting heat? - Answer light shiny surfaces
what objects emit infared radiation? - Answer a...
Gcse (AQA) physics P1 Practice
Questions Solved Correctly.
how is heat transferred from place to place? - Answer conduction, convection, radiation
What surface is better at absorbing heat? - Answer dark matt surfaces
what surface is better at reflecting heat? - Answer light shiny surfaces
what objects emit infared radiation? - Answer all objects. the hotter it is, the more it emits.
what does infared radiation involve? - Answer waves! not particles
what can radition pass through? - Answer vaccum
particles in solids, liquids and gases have ? amounts of energy - Answer different
describe the particles in a solid - Answer close together particles, with a regular pattern.They vibrate
and stay in a fixed position
describe the particles in a liquid - Answer close particles with a random patter. Move around eachother
describe the particles in a gas - Answer far apart, random pattern, move quickly and in any direction
what is conduction - Answer when heat energy moves through a substance
are metals, or non metals better conductors - Answer metals
what are non metals and gases - Answer good insulators
, the hotter the metal is... - Answer the more kinetic energy the vibrations have
what happens in convection - Answer particles with lots of heat energy get less dense and rise,
replacing particles with less heat energy.
what is it called when a liquid changes to a gas? - Answer evaporation
what is it called when a gas changes to a liquid - Answer condensation
what increases condensation rate? - Answer increase in temperature of gas
what increases rate of evaporation? - Answer increase in temperature of liquid, increase surface area,
air moving over liquids surface
the bigger difference in temperature between object and surroundings... - Answer the greater rate of
heat energy is transferred
small animals have - Answer large surface area to volume ratio
if small animals have a large surface area to volume ratio - Answer they lose heat to surroundings easily
and have to eat more to replace energy lost
large animals have - Answer a small surface area to volume ratio
if large animals have a small surface area to volume ratio - Answer they lose little heat to surroundings
and may risk over heating
what enables elephants to cool down quickly - Answer large ears
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