AQA GCSE Physics - Paper 1|questions
with correct answers|100% pass
Energy`Stores`-`correct`answers`-`1)`Elastic`potential
2)`Gravitational`potential
3)`Thermal`
4)`Electrostatic`
5)`Nuclear`
6)`Chemical
7)`Kinetic
8)`Magnetic
9)`Light
10)`Sound
How`is`energy`transferred?`-`correct`answers`-`1)`Mechanically`-`force`doing`work
2)`Electrically`-`work`done`by`moving`charges
3)`Heating/Radiation`-`light,`sound
How`can`work`be`done?`-`correct`answers`-
`When`a`current`flows`or`by`a`force`moving`an`object
Kinetic`energy`formula`-`correct`answers`-`E=1/2mv²
Kinetic`energy(J)`=`0.5`x`mass(kg)`x`speed²(m/s)
Gravitational`potential`energy`formula`-`correct`answers`-`E=mgh
,G.P.E(J)`=`mass(kg)`x`gravitational`field`strength`(N/kg)`x`height`(m)
What`happens`when`an`object`falls`and`there's`no`air`resistance?`-`correct`answers`-
`Energy`lost`from`the`g.p.e`store`=`energy`gained`in`the`kinetic`energy`store
What`does`air`resistance`do`when`acting`against`falling`objects?`-`correct`answers`-
`It`causes`some`energy`to`be`transferred`to`other`energy`stores`e.g.`the`thermal`energy`stores`
of`the`object`and`the`surroundings
Elastic`potential`energy`formula`-`correct`answers`-`E=1/2ke²
E.P.E(J)`=`0.5`x`spring`constant(N/m)`x`extension²(m)
What`is`SHC?`-`correct`answers`-
`The`amount`of`energy`needed`to`raise`the`temperature`of`1kg`of`a`substance`by`1°C
SHC`formula`-`correct`answers`-`E=mcθ
Change`in`thermal`energy(J)`=`mass(kg)`x`SHC(J/kg/°C)`x`temperature`change(°C)
What`is`the`conservation`of`energy`principle?`-`correct`answers`-
`Energy`can`be`transferred`usefully,`or`stored`or`dissipated`(wasted`energy),`but`can`never`be
`created`or`destroyed
What`is`power?`-`correct`answers`-`The`rate`of`energy`transfer,`or`the`rate`of`doing`work
What`is`1W`equal`to?`-`correct`answers`-`1J`of`energy`transferred`per`second
Power`Equation`1`-`correct`answers`-`E=Pt
,Energy`transferred(J)`=`power(W)`x`time(s)
Power`Equation`2`-`correct`answers`-`W=Pt
Work`done(J)`=`power(W)`x`time(s)
What`is`conduction?`-`correct`answers`-
`The`process`where`vibrating`particles`transfer`energy`to`neighbouring`particles
Energy`is`transferred`to`thermal`stores`of`the`object`-
`this`energy`is`shared`across`the`kinetic`energy`stores
What`is`thermal`conductivity?`-`correct`answers`-
`A`measure`of`how`quickly`energy`is`transferred`through`a`material`via`conduction
What`is`convection?`-`correct`answers`-
`Where`energetic`particles`move`away`from`hotter`to`cooler`regions
Energy`is`transferred`to`the`thermal`energy`stores`of`the`object`and`is`shared`across`the`kine
tic`stores
What`do`radiators`create?`-`correct`answers`-`Convection`currents
Convection`currents`-`process`-`correct`answers`-
`1)`Energy`is`transferred`from`the`radiator`to`the`nearby`air`particles`by`conduction
2)`The`air`by`the`radiator`becomes`warmer`and`less`dense`as`the`particles`move`quicker
3)`The`warm`air`rises`and`displaces`the`cooler`air,`which`is`then`heated`by`the`radiator
4)`The`previously`heated`air`transfers`energy`to`the`surroundings`-
`the`air`cools,`becomes`denser`and`sinks
, What`does`lubrication`do?`-`correct`answers`-`Reduce`frictional`forces
What`does`insulation`do?`-`correct`answers`-
`Reduce`the`rate`of`energy`transfer`by`heating
Thermal`insulation`techniques`-`correct`answers`-`1)`Cavity`walls`-
`made`up`of`an`inner`and`outer`wall`with`an`air`gap`in`the`middle`-
`the`air`gap`reduces`the`amount`of`energy`transferred`by`conduction`through`the`walls
2)`Cavity`wall`insulators`-
`the`air`gap`is`filled`with`foam`also`reduces`energy`transfer`by`convection`in`the`wall`cavity
3)`Loft`insulation`-`reduces`convection`currents`being`created`in`lofts
4)`Double-glazed`windows`-
`air`gap`between`two`sheets`of`glass`that`prevent`energy`transfer`by`conduction`through`the`
windows
5)`Draught`excluders`-`reduce`energy`transfers`by`convection`around`doors`and`windows
How`do`you`improve`efficiency?`-`correct`answers`-`1)`Lubrication
2)`Insulation
3)`Making`objects`more`streamlined
Efficiency`-`energy`transfer`equation`-`correct`answers`-
`Useful`output`energy`transfer`divided`by`total`input`energy`transfer
Efficiency`-`power`equation`-`correct`answers`-
`Useful`power`output`divided`by`total`power`input
Is`any`device`100%`efficienct?`-`correct`answers`-`No
with correct answers|100% pass
Energy`Stores`-`correct`answers`-`1)`Elastic`potential
2)`Gravitational`potential
3)`Thermal`
4)`Electrostatic`
5)`Nuclear`
6)`Chemical
7)`Kinetic
8)`Magnetic
9)`Light
10)`Sound
How`is`energy`transferred?`-`correct`answers`-`1)`Mechanically`-`force`doing`work
2)`Electrically`-`work`done`by`moving`charges
3)`Heating/Radiation`-`light,`sound
How`can`work`be`done?`-`correct`answers`-
`When`a`current`flows`or`by`a`force`moving`an`object
Kinetic`energy`formula`-`correct`answers`-`E=1/2mv²
Kinetic`energy(J)`=`0.5`x`mass(kg)`x`speed²(m/s)
Gravitational`potential`energy`formula`-`correct`answers`-`E=mgh
,G.P.E(J)`=`mass(kg)`x`gravitational`field`strength`(N/kg)`x`height`(m)
What`happens`when`an`object`falls`and`there's`no`air`resistance?`-`correct`answers`-
`Energy`lost`from`the`g.p.e`store`=`energy`gained`in`the`kinetic`energy`store
What`does`air`resistance`do`when`acting`against`falling`objects?`-`correct`answers`-
`It`causes`some`energy`to`be`transferred`to`other`energy`stores`e.g.`the`thermal`energy`stores`
of`the`object`and`the`surroundings
Elastic`potential`energy`formula`-`correct`answers`-`E=1/2ke²
E.P.E(J)`=`0.5`x`spring`constant(N/m)`x`extension²(m)
What`is`SHC?`-`correct`answers`-
`The`amount`of`energy`needed`to`raise`the`temperature`of`1kg`of`a`substance`by`1°C
SHC`formula`-`correct`answers`-`E=mcθ
Change`in`thermal`energy(J)`=`mass(kg)`x`SHC(J/kg/°C)`x`temperature`change(°C)
What`is`the`conservation`of`energy`principle?`-`correct`answers`-
`Energy`can`be`transferred`usefully,`or`stored`or`dissipated`(wasted`energy),`but`can`never`be
`created`or`destroyed
What`is`power?`-`correct`answers`-`The`rate`of`energy`transfer,`or`the`rate`of`doing`work
What`is`1W`equal`to?`-`correct`answers`-`1J`of`energy`transferred`per`second
Power`Equation`1`-`correct`answers`-`E=Pt
,Energy`transferred(J)`=`power(W)`x`time(s)
Power`Equation`2`-`correct`answers`-`W=Pt
Work`done(J)`=`power(W)`x`time(s)
What`is`conduction?`-`correct`answers`-
`The`process`where`vibrating`particles`transfer`energy`to`neighbouring`particles
Energy`is`transferred`to`thermal`stores`of`the`object`-
`this`energy`is`shared`across`the`kinetic`energy`stores
What`is`thermal`conductivity?`-`correct`answers`-
`A`measure`of`how`quickly`energy`is`transferred`through`a`material`via`conduction
What`is`convection?`-`correct`answers`-
`Where`energetic`particles`move`away`from`hotter`to`cooler`regions
Energy`is`transferred`to`the`thermal`energy`stores`of`the`object`and`is`shared`across`the`kine
tic`stores
What`do`radiators`create?`-`correct`answers`-`Convection`currents
Convection`currents`-`process`-`correct`answers`-
`1)`Energy`is`transferred`from`the`radiator`to`the`nearby`air`particles`by`conduction
2)`The`air`by`the`radiator`becomes`warmer`and`less`dense`as`the`particles`move`quicker
3)`The`warm`air`rises`and`displaces`the`cooler`air,`which`is`then`heated`by`the`radiator
4)`The`previously`heated`air`transfers`energy`to`the`surroundings`-
`the`air`cools,`becomes`denser`and`sinks
, What`does`lubrication`do?`-`correct`answers`-`Reduce`frictional`forces
What`does`insulation`do?`-`correct`answers`-
`Reduce`the`rate`of`energy`transfer`by`heating
Thermal`insulation`techniques`-`correct`answers`-`1)`Cavity`walls`-
`made`up`of`an`inner`and`outer`wall`with`an`air`gap`in`the`middle`-
`the`air`gap`reduces`the`amount`of`energy`transferred`by`conduction`through`the`walls
2)`Cavity`wall`insulators`-
`the`air`gap`is`filled`with`foam`also`reduces`energy`transfer`by`convection`in`the`wall`cavity
3)`Loft`insulation`-`reduces`convection`currents`being`created`in`lofts
4)`Double-glazed`windows`-
`air`gap`between`two`sheets`of`glass`that`prevent`energy`transfer`by`conduction`through`the`
windows
5)`Draught`excluders`-`reduce`energy`transfers`by`convection`around`doors`and`windows
How`do`you`improve`efficiency?`-`correct`answers`-`1)`Lubrication
2)`Insulation
3)`Making`objects`more`streamlined
Efficiency`-`energy`transfer`equation`-`correct`answers`-
`Useful`output`energy`transfer`divided`by`total`input`energy`transfer
Efficiency`-`power`equation`-`correct`answers`-
`Useful`power`output`divided`by`total`power`input
Is`any`device`100%`efficienct?`-`correct`answers`-`No
