Cerrar
Describe what happens when 2 objects interact
What is the resultant force ?
Describe what happens to a stationary object is :
A. the resultant force is 0
B. the resultant force is not 0
Describe what happens to a moving object is :
A. the resultant force is 0
B. the resultant force is not 0
state the units used in this equation
What does the gradient of a distance–time graph represent
what is velocity
state the units used in this equation
What does the gradient of a velocity–time graph represent
What is stopping distance
State what can effect a drivers reaction time
Explain why the temperature of the breaks increase when they are used
What effects a vehicles braking distance
DEscribe the term terminal velocity
state the units used in this equation
state the units used in this equation
W = F x d
state the units used in this equation
when is energy transferred ?
discuss the transfer of kinetic energy during space shuttle re entry
state the units of the below equation
state the units of the below equation
state the units of the below equation
state the units of the below equation
State what is meant by conservation of momentum ?
Two railway carriages collide and move off together. Carriage A has a mass of 12,000 kg and moves at 5 m/s before the collision. Carriage B has a mass of 8,000 kg and is stationary before the collision. What is the velocity of the two carriages after the collision?
A gun has a mass of 2·5 kg and a recoil velocity of 8 m/s.
What is the velocity of the bullet if it has a mass of 0·02 kg?
Describe how materials become statically charged ?
Describe what happens when charged materials come close together ?
What is electric charge ?
state the units of the below equation
what is potential difference ?
state the units of the below equation
draw and give the names of all the circuit symbols
give a use of a thermistor
give a use of an ldr
What are Current–potential difference graphs used to show ?
draw a current–potential difference graph for a resistor at constant temperature.
how can the resistance of a component be found ?
describe the relationship between current and potential difference in a resistor (at a constant temperature)
state the units of the below equation
V = I x R
describe how increasing resistance effects the current flowing through a component ?
How do you calculate the potential difference of cells place in series ?
state 3 things that are true for components connected in series
state 2 things that are true for components connected in parallel
The resistance of a filament bulb increases as the temperature of the filament increases.
draw a graph that shows this
The resistance of a filament bulb increases as the temperature of the filament increases.
explain why this occurs ?
The current through a diode flows in one direction only. The diode has a very high resistance in the reverse direction
draw a graph that shows this
What is an LED ?
Why are LEDs being used more ?
What is a LDR ?
What happens to resistance in a thermistor when temperature increases ?
what is d.c current ?
what is alternating current ?
draw an oscilloscope trace for direct current
draw an oscilloscope trace for alternating current
show how you can use an oscilloscope trace to calculate the time period and frequency of a supply
What time of supply is mains electricity and what is its voltage and frequency
show how a plug is wired
What is the function of fuses or circuit breakers ?
How does a fuse work ?
What is an RCCB ?
Which works faster an RCCB or a fuse ?
What safety precaution is taken with devices with metal cases ?
Why might a device not be earthed ?
What is the relationship between fuse thickness and rating ?
what happens when electrical charge flows through a resistor ?
What is a disadvantage of using filament lamps ?
state the units for this equation
state the units for this equation
state the units for this equation
E = V x Q
Describe the structure of the atom
State the relative masses and relative electric charges of protons, neutrons and electrons.
Explain why an atom has no overall charge ?
How can atoms become ions ?
what is an isotope ?
what is the mass number and atomic number of an atom ?
what is a radioactive substance ?
Is radioactivity a random or predictable process
What are the origins of background radiation
state the nature of the :
alpha particle
beta particle
gamma radiation
complete this nuclear equation :
complete this nuclear equation :
state the properties of the alpha, beta and gamma radiations limited to their relative ionising power, their penetration through materials and their range in air.
explain this in terms of the relative mass and charge of each particle why alpha particles are deflected less than beta particles and in an opposite direction
State the dangers of alpha radiation
State the dangers of beta radiation
State the dangers of gamma radiation
give the uses of alpha radiation ?
gives uses of beta radiation ?
gives uses of alpha radiation ?
what is meant by half life ?
what are the 2 fissionable materials commonly in use ?
what is nuclear fission ?
Explain how fission occurs and what is released ?
The neutrons may go on to start a chain reaction.
draw a sketch to show this
what is nuclear fusion ?
where in nature does nuclear fusion occur ?
describe how stars and planets form
explain why the early Universe contained only hydrogen but now contains a large variety of different elements
describe how the elements heavier the H have been formed by stars
What is the main sequence period of a stars life
describe the life cycle of stars
