WorksheetsPhysics paper 1
Total questions: 48
Worksheet time: 24mins
What happens to the amount of energy in a car's kinetic energy store when the car slows down?
It remains the same
It decreases as some energy is transferred away to different energy stores
It decreases as some energy is destroyed
Pick a suitable option that can be used to improve the efficiency of a battery-powered toy car
Insulate the car
Increase the input energy to the car
Lubricate any moving parts in the car
When an object falls from a height, the maximum energy transferred to its kinetic energy store is equal to
the energy transferred away from its gravitational energy store
the energy transferred to its gravitational energy store
Which of these is a disadvantage of using wind turbines to generate electricity?
They can be noisy
The release atmospheric pollution (CO2) when running
The produce dangerous waste that is difficult to dispose of
The amount of energy transferred by an appliance depends on
its power and size
its power and mass
its power and the time it is on for
800 J of energy is supplied to a toaster with an efficieincy of 25%. What is the useful output of the toaster?
200J
775J
1000J
When a racket hits a ball, energy is transferred from the racket's kinetic energy store to the ball's kinetic energy store. This energy is transferred...
by heating
electrically
mechanically
Two garages of equal size and shape have walls made of the same material. One garage has thicker walls than the other. They are heated to the same temperature then left to cool. Which garage would cool the fastest?
The one with thick walls
The one with thin walls
Power is the ...
conservation of momentum
energy of a moving object
rate of doing work
When a spring is compressed, which of these energy stores is energy transferred to?
The springs elastic potential energy store
The springs nuclear energy store
The springs magnetic energy store
What is the name of a system in which there is no net change in the total energy?
A closed system
An open system
A mechanical system
Two materials with the same mass and different specific heat capacities are cooled by 10 degrees Celsius. Which material emits more energy?
The material with the lower specific heat capacity
The material with the higher specific heat capacity
The rate of energy transfer from a house can be reduced by...
having walls with a low thermal conductivity
having walls with a high thermal conductivity
Motor 1 and motor 2 each lift objects of equal weight. They both have the same power rating but motor 2 lifts the weight faster. Which motor is more efficient?
Motor 1
Motor 2
We continue using non renewable energy resources despite the negative impact on the environment. Which of the following is a possible reason for this?
Because non renewable resources will never run out
Because non renewable resources are more reliable than renewable alternatives
Because renewable alternatives are more harmful to the environment
A cannon uses explosives to launch a ball into the air. Which is a wasteful energy transfer that occurs when the cannon is fired?
Chemical energy store of explosives to kinetic energy store of ball
Chemical energy store of explosives to gravitational potential energy store of ball
Chemical energy store of explosives to Thermal energy store of ball
True or false? The UK mains electricity supply is direct current.
True
False
True or false? The current is the same at any point in a single closed loop of wire that is connected to a power supply.
True
false
In the UK, what is the typical potential difference between the live wire and the earth wire in an electrical appliance?
230V
0V
12V
A Current of 2A passes through a device with a resistance of 8 Ω. What is the power of the device?
16 W
32 W
128 W
True of false? Two components connected in parallel will each have the same potential difference across them.
True
False
Increasing the potential difference of electricity at a given power...
Increases the energy lost through heating
decreases the current
Increases the rate of flow of charge
The resistance of an ohmic conductor at a constant temperature
is higher when larger currents flow through it
doesn't change as the current varies
is low when the current flows in one direction but much higher when the current flows in the reverse direction.
In a circuit with a fixed potential difference, what would happen to the current if you increased the resistance?
The current would increase
The current would stay the same
The current would decrease
True or false? Transformers are used to carry electricity all around the country
True
False
What type of resistor could be used in a sensing circuit designed to turn on an automatic night light when it gets too dark?
Diode
Thermistor
LDR
What is the same for electric current that is constantly changing direction?
Alternating current (AC)
Direct current (DC)
switching current (SW)
True or false? In a series circuit, the source potential difference is shared between all components
True
False
True or false? Transmitting electricity at a high potential difference and a low current is more energy efficient than transmitting at a low potential difference and a high current.
True
False
Adding resistors in parallel decreases the ttotal resistance of the circuit because...
it decreases the potential difference through the circuit
it increases the total current that can flow around a circuit
it decreases the charge that can flow through the circuit
Electric current is...
the driving force that pushes charges around a circuit
measure of how much charges slow down as they flow through a circuit
the flow of electrical charge
Which wire inside a three-core cable is coated with blue plastic?
Earth
Live
Neutral
True or false? Liquids are generally denser than solids and gases
True
False
True or false? The temperature of a gas is related to the average energy in the kinetic energy stores of its particles?
True
False
What is the specific latent heat of fusion?
The amount of energy needed to melt 1Kg of a substance
The amount of energy needed to boil 1Kg of a substance
The amount of energy needed to condense 1Kg of a substance
The internal energy of a system is equal to...
the total energy that its particles have in their kinetic energy stores
the total energy that its particles have in their potential energy stores
the total energy that its particles have in their kinetic and potential energy stores
What is the specific heat capacity of a substance?
The energy released by a substance when it freezes
The total energy stored by the particles in a system
The energy needed to raise the temperature of 1Kg of a substance by 1 degrees Celsius.
Changes of state are different to chemical changes because
changes of state can be reversed to recover the original properties of the material
changes of state result in the creation of new substances
changes of state cannot happen to gases
What happens to the mass of a substance when it changes from a solid to a liquid?
increases
decreases
stays the same
What will happen to the pressure of a fixed volume of gas if its temperature is increased?
It will decrease
It will increase
It will stay the same
What is the name for atoms with the same number of protons but different numbers of neutrons?
Ions
Isomers
Isotopes
True or false? The results of the alpha scattering experiment led to the development of the plum pudding model of the atom
True
False
The count rate of a radioactive sample falls from 130 Bq to 65 Bq in 15 minutes. What is it's half life?
15 minutes
30 Minutes
1 hour
True or false? Any exposure to ionising radiation will kill living cells.
True
False
True or false? When a radioactive nucleus emits a beta particle its atomic number increases.
True
False
Which type of radiation can penetrate the furthest into materials?
Alpha
Beta
Gamma
Which type of radiation is the same as a Helium nucleus?
Alpha
Beta
Gamma
Which of the following gives the number of neutrons in the nucleus of an atom?
The mass number
The mass number - the atomic number
The mass number + the atomic number
