For a given mass, its acceleration is proportional to the unbalanced force acting on it.
What does F = ma mean in words?
100
Heat transfer in solids.
What is conduction?
100
A sound wave.
Name an example of a longitudinal wave.
100
A laptop adaptor turns 220V a.c into 12V d.c. What electrical devices are needed inside it?
A transformer and a diode (for rectification).
100
Fast moving electrons.
What are beta particles?
200
Force x perpendicular distance to the pivot
How could you calculate a moment?
200
As water is heated it becomes less dense and rises. Further away from the heat source it cools, becomes more dense and sinks.
What is a convection current?
200
A lens that is thicker in the middle and thinner at the edges.
What is a convex/converging lens?
200
Only if both inputs are 1, the output will be 1.
Describe the action of an AND gate.
200
A nucleus releases an electron and an anti-neutrino.
What is released by a nucleus during beta decay?
300
Beneath the elastic limit, extension is proportional to the applied load.
What is Hooke's law?
300
Specific heat capacity.
What is measured in J/kgC?
What is the amount of heat energy needed to increase the mass of 1kg of a substance by 1 degree celcius?
300
It has shortest wavelength and highest frequency.
Where would you find gamma waves on the electromagnetic spectrum?
300
GESTURE ROUND!!!!
Watch Mr. Osborne..
Flemings Left Hand Rule.
F B I.
300
They have the same number of protons but a different number of neutrons.
What are isotopes?
400
Newton's first law.
Which law states "if the forces on an object are balanced, if at rest it will remain at rest, or if in motion it will move at a constant speed in a straight line"?
400
Reduce humidity, increase temperature, blow across the surface.
In what three ways could you increase the rate of evaporation?
400
Describe refraction of light as it enters a glass block.
Light slows down as it enters a more dense medium and turns towards the normal.
400
PICTURE ROUND!!
Describe the action of the circuit Mr. Osborne will show you...
......................
400
Atoms are mostly empty space.
Most of the mass of an atom is concentrated at the centre.
The nucleus of atoms is positively charged.
What are three conclusions of Rutherford's experiment?
500
PV = constant
What is Boyle's law?
500
Explain why metals expand when they are heated.
..................
500
The image is magnified, virtual and upright.
Describe the image in a magnifying glass.
500
Why is a split ring commutator used in a d.c motor?
To reverse current in loop of wire so that rotation continues
500
When alpha and beta particles enter a strong magnetic field, they follow a curved path. Why?
Will they curve in the same way?
There is a force due to the magnetic field because particle is charged.