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30 questions
What are the 8 stores on energy?
Mechanically electrically
radiation heating
kinetic chemical nuclear magnetic
Kinetic gravitational chemical
elastic magnetic electrically
nuclear thermal.
Kinetic gravitational chemical
elastic magnetic electrostatic
nuclear and thermal
Kinetic gravitational chemical
electrically
magnetic electrostatic
nuclear and thermal.
Equation for efficiency
Efficiency = useful output-total input
Efficiency = useful output/total
input
Efficiency=total input/useful output
Efficiency = useful output -total
input
What is the unit for energy?
Hertz
Joule
Watt
Coulomb
There are units for efficiency
FALSE
TRUE
What are the 3 fossil fuels?
Coal natural gas and minerals
Coal oil and natural gas
Coal oil and wood
What is meant by thermal conductivity?
Rate at which a material melts
Rate at which a material conducts electricity
The rate at which a material conducts heat
Rate at which a material cools down
The work done equation is?
Work done = energy transferred x distance
Work done = force x distance x time.
Work done = force x distance.
Work done = time x distance.
What is the unit for power
Inch
Pascal
Watt
Joule
_________ is the rate of flow of charge.
What is the PD of the uk mains?
230v
50v
60v
260v
Is the frequency of the uk mains
230hz
260hz
50hz
60hz
______ is the unit for current
The national grid is
system of cables and generators
system of cables and transformers
system of pylons and transformes
system of pylons and generators
What is charge?
Alternating current
Packet of electrons
Rate of flow of charge
Packet of protons
AC the electrons continuously
change direction. DC the electrons
flow in one direction only.
TRUE
FALSE
The 3 wires in a UK plug are live-brown, neutral-blue, earth-green
and yellow stripes.
TRUE
FALSE
What colour is the earth wire?
Brown
Yellow and red stripes
Blue
green and yellow stripes
What colour is the neutral wire?
Brown
Blue
green and yellow stripes
red
What is the live wire colour?
Red
Brown
earth green and yellow stripes
Blue
What does the fuse do?
Decrease volt
The fuse protects the person using it from electric shocks.
The fuse protects the appliance from
overheating if too much current flows.
Make it look pretty.
What does the EARTH wire do.
Protects the appliance from overheating if too much current flows
Increases voltage
Protects the user from an electric shock in case the live wire touches the casing of an appliance.
Protects the user from an electric shock in case the neutral wire touches the casing of an appliance.
What is the equation that links
current, power and potential
difference?
Power = potential difference /
current (P=VI)
Power = potential difference x
current (P=VI)
Power = current squared x resistance
(P=I2R)
What is the equation that links
current, resistance and power?
Power = current squared x resistance
(P=IsquaredR)
Power = potential difference /
current (P=VI)
Power = potential difference x
current (P=VI)
What is the unit for charge
Volts
Pascals
Coulombs
Amps
What is the unit of density?
kg / m²
kg/m³
kg x m³
kg x m²
We use a displacement can to measure an irregular object
True
False
Temperature of a gas is the
average kinetic energy of the
molecules.
TRUE
FALSE
In specific heat capacity specific means 1kg
True
False
The arrangement of movement of particles in a liquid?
closely packed, vibrate
around fixed positions.
far apart, particles move
randomly at varying speeds.
close together, can flow
over each other.
Name the state change solid to gas
Freezing
Evaporation
Sublimation
Deposition
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