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WorksheetsYear 11 Paper 1 - Physics
Total questions: 93
Worksheet time: 57mins
What type of energy store is exemplified by moving objects?
(a)
What name is given to a material which allows thermal energy to pass through it easily?
Thermal insulator
Thermal conductor
What type of heat transfer happens only in fluids (gas and liquids)?
Conduction
Radiation
Convection
Equation for work done.
Work done = Force / time
Work done =Force x distance
Work done = Force / distance
Equation for power.
Power = Energy transferred x time
Power = Energy transferred/distance
Power = Energy transferred/time
Units for power.
Joules (J)
Watts (W)
Define power
(a)
Units for force
Newton (N)
Joules (J)
What is the equation for elastic potential energy?
Ee=ke2
Elastic potential energy (J) = spring constant (N/m) x extension2 (m)
Ee=1/2ke2
Elastic potential energy (J) = 1/2 x spring constant (N/m) x extension2 (m)
What is the equation for kinetic energy?
(a)
Which equation describes Hooke's Law?
F = k/e
Force (N) = spring constant (N/m) / extension (m)
F = ke
Force (N) = spring constant (N/m) x extension (m)
What is the equation for "gravitational potential energy"?
(a)
What charge will an object have if it gains electrons?
Negative
Positive
How do objects become negatively charged?
By gaining electrons
By losing electrons
What will happen if two objects with similar charges are brought together?
Attract
Repel
How do you draw the electric field pattern for an isolated charged sphere with a positive charge?
Arrows facing in
Arrows facing out
What is the atomic number?
Number of protons AND neutrons.
Number of protons
A charged atom (lost or gained electrons)
Atoms of the same element with the SAME number of protons but a DIFFERENT number of neutrons.
What is an "ion"?
Number of protons AND neutrons.
Number of protons
A charged atom (lost or gained electrons)
Atoms of the same element with the SAME number of protons but a DIFFERENT number of neutrons.
State the conclusion provided by Niels Bohr
Discovered neutrons
Electrons orbit the nucleus
What is the equipment for measuring radiation.
(a)
Name the four types of nuclear radiation
alpha particle
electron
beta particle
gamma ray
neutron
Describe the structure of an alpha particle
(a)
What is a beta particle?
A negative electron
A positive electron
Define "half life"
Exposing an object to nuclear radiation. The irradiated object does not become radioactive.
The unwanted presence of radioactive atoms on other materials
The time it takes for the number of unstable nuclei of the isotope in a sample to halve
State two man made sources of background radiation
Fallout from nuclear weapons testing
Rocks
Cosmic rays
Nuclear accidents
State two man made sources of background radiation
Fallout from nuclear weapons testing
Rocks
Cosmic rays
Nuclear accidents
Define 'radiation dose'
The amount of radiation that is absorbed by a person (Sv)
Radiation around us all the time.
Give an example of an internal organ that would be explored with radiation
(a)
What kind of radiation is used to look at internal organs?
Alpha
Beta
Gamma
What type of radiation is stopped by skin
Gamma
Beta
Alpha
Why is gamma used to destroy tumours?
(a)
What two words can we use to describe the process of radioactive decay?
(a)
Define 'Nuclear fission'
The joining of two light nuclei to form a heavier nucleus with some mass converted to energy.
Splitting a large & unstable nucleus.
State 2 examples of elements that undergo fission.
Platinum
Uranium
Plutonium
State the 3 products of nuclear fission
2 smaller nuclei
gamma rays
2 or 3 neutrons
beta rays
In what form is energy released in a fission reaction?
Beta rays
Gamma rays
Alpha rays
Where does nuclear fusion happen?
(a)
State the equation for density
ρ =m x v
Density (kg/m3) = mass (kg) x volume (m3)
ρ =m/v
Density (kg/m3) = mass (kg) / volume (m3)
ρ = v/m
Density (kg/m3) = volume (m3) / mass (kg)
Describe the particle model of liquids
Particles placed randomly, none or very few touching.
Particles randomly placed, almost all particles touching.
Particles all touching (bonded) in rows
Describe the particle model of solids
Particles placed randomly, none or very few touching.
Particles randomly placed, almost all particles touching.
Particles all touching (bonded) in rows
Describe the state change in sublimation
(a)
How do the particles move in a solid?
Vibrate in a fixed position
Randomly, in all directions
Define 'conservation of mass'
(a)
Define "internal energy"
Amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius.
The energy needed for a substance to change state
Energy stored inside a system by the particles
Define "latent heat"
Amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius.
The energy needed for a substance to change state
Energy stored inside a system by the particles
Define "specific latent heat of fusion"
The amount of energy required to change the state of a solid to a liquid without a change in temperature
The amount of energy required to boil one kilogram of the substance with no change in temperature
Equation for specific latent heat.
E = m x L
Energy (J) = mass (kg) x specific latent heat (J/kg)
E = m / L
Energy (J) = mass (kg) / specific latent heat (J/kg)
State the equation for change in thermal energy
∆ E = m /c /∆ θ
Change in energy (J) = mass (kg) / specific heat capacity (J/Kg°C) / change in temperature (°C)
∆ E = mc ∆ θ
Change in energy (J) = mass (kg) x specific heat capacity (J/Kg°C) x change in temperature (°C)
State the units for specific latent heat
Joules per kilogram, J/kg
Joules per kilogram per degree Celsius, J/kg °C
State two factors that will influence gas pressure
Size
Temperature
Mass
Volume
Write Boyle's law in words
(a)
State 2 factors that increase when work is done on a gas
Internal energy
Size
Temperature
What does LED stand for?
Light energy diode
Light emitting diode.
What does LDR stand for?
(a)
State the equation for charge flow
Q=It
Charge flow C = current (A) x time (S)
Q=I / t
Charge flow C = current (A) / time (S)
Q=It
Charge flow C = time (S) / current (A)
State the units for resistance
Volts (V)
Ohms (Ω)
Amperes (A)
What is a non-ohmic conductor?
Electrical component where current and voltage are NOT directly proportional
Electrical component where current and voltage are DIRECTLY proportional
Which piece of equipment is used to measure voltage in a circuit?
Ammeter
Voltmeter
Do parallel circuits have one loop or multiple loops?
one loop
multiple loops
Describe the distribution of potential difference in a series circuit
Split up in the different loops
It is the same everywhere
Split between components
The same in each loop
Describe the distribution of potential difference in a parallel circuit
Split up in the different loops
It is the same everywhere
Split between components
The same in each loop
Describe the distribution of current in a parallel circuit
Split up in the different loops
It is the same everywhere
Split between components
The same in each loop
Are ammeters connected in series or parallel?
in parallel
in series
Equation for resistance in a parallel circuit
1/Rtotal = 1/R1 + 1/R2
Rtotal = R1 +R2
What affect does adding resistors have in a parallel circuit on the resistance?
Decreases the total resistance
Increases the total resistance
Graph an IV for a filament bulb.
Graph an IV for a dioide
Name 4 non-ohmic conductors
Filament bulb
LEDs
Diodes
Thermistors
LDRs
Describe the relationship between temperature and resistance in a thermistor.
Temperature decreases and Resistance increases
Temperature increases and Resistance decreases
Why are filament light bulbs non-ohmic?
Current ↑, temperature ↑, resistance ↑
Current ↓, temperature ↓, resistance ↓
State one use of a thermistor
(a)
Describe the relationship between light intensity and resistance in an LDR
Light intensity ↓ , resistance ↑
Light intensity ↑, resistance ↓
Symbol of LDR
Symbol of resisitor
What do AC and DC mean?
(a)
State the function of the neutral wire.
Completes the circuit
Carries alternating potential difference from the supply
Safety wire to remove excess potential difference (to stop the appliance becoming live)
State the function of the live wire.
Completes the circuit
Carries alternating potential difference from the supply
Safety wire to remove excess potential difference (to stop the appliance becoming live)
State the potential difference of the neutral wire.
At or close to 0V
230V
0V unless there is a fault.
State the potential difference of the earth wire.
At or close to 0V
230 V
0V unless there is a fault.
State the equation we use to calculate the energy transferred by a device that uses charge flow
P= IV
E = QV
State the equation that links current, potential difference and power
P =I / V
power (W) = current (I) / potential difference (V)
P = IV
power (W) = current (I) x potential difference (V)
State the two most commonly wasted forms of energy
Kinetic
Thermal
Light
Sound
State the equation that links time, energy and power
E=Pt
energy (J) = power (W) x time (s)
E=P / t
energy (J) = power (W) / time (s)
State the equation that links energy, potential difference and charge flow
E = QV
energy (J) = charge flow (C) x potential difference (V)
E = Q / V
energy (J) = charge flow (C) / potential difference (V)
What is the national grid used for?
(a)
State the effect of step up transformers on current.
Increases p.d.
Decreases p.d.
Decreases current.
Increases current.
State the effect of step up transformers on potential difference
Increases p.d.
Decreases p.d.
Decreases current.
Increases current.
State the effect of step down transformers on current.
Increases p.d.
Decreases p.d.
Decreases current.
Increases current.
Why are step down transformers used?
To reduce the potential difference to make it safe for domestic use.
To reduce energy loss from cables (thermal)
If Vs < Vp, is this a step up or step down transformer?
Step down transformer.
Step up transformer.
What does Is stand for?
Potential difference in secondary coil
Current in secondary coil
Potential difference in primary coil
Current in primary coil
What does Ip stand for?
Potential difference in secondary coil
Current in secondary coil
Potential difference in primary coil
Current in primary coil
State the effect of step down transformers on current and potential difference
↓ p.d., ↑current
↑ p.d., ↓ current
