distance travelled in a stated direction

speed travelled per unit time taken

distance travelled per unit time taken in a stated direction

speed travelled per unit time taken in a stated direction

change in speed per unit time taken

increase in velocity

decrease in velocity per unit time taken

change in velocity per unit time taken

gradient of the graph

area under the graph

volume under the graph

slope of the graph

the increase in velocity per unit time taken

the constant increase in velocity per unit time taken

the decrease in velocity per unit time taken

the constant increase in speed per unit time taken

Balanced, the forces in opposite direction are equal in size.

Balanced, the resultant force is equal.

Unbalanced, the resultant force is zero.

Unbalanced, one force is greater than the other in opposite direction.

Every forces causes a reaction

No resultant force acting hence no acceleration

Forces acting on the body always equal and opposite

To every action there is an equal and opposite reaction.

10 m/s

0 m/s

0 m/s²

10 m/s²

Pascal

kilogram

Newton

Watt

60 kg

60 N

600 N

600 kg

mass $\div$ volume

mass $\times$ volume

volume $\div$ mass

mass $+$ volume

Force $$\div$$ distance travelled in the same direction as the force

Force $$\times$$ perpendicular distance to the pivot

Force $$\div$$ perpendicular distance to the pivot

Force $$\times$$ distance in the same direction as force

Gravity acting on the mass of the object.

A point where all the weight of the object seems to act.

Weight of the object acting downwards.

Gravitational force acting on the object.

measure the length of the spring with load

subtract the length of the spring with load with length of spring with no load

subtract the length of the spring with load with length of spring with load

measure the length of the spring without load

extension of spring is no longer proportional to the force

extension of spring is directly proportional to the force

spring will return to its original length

spring will not return to its original length

Force per unit area

Mass per unit area

Weight per unit volume

Force per unit volume

Pressure from surrounding atmosphere , 100 000 Pa

Pressure from surrounding air molecules 10 000 Pa

Pressure from surrounding air molecules 100 000 Pa

Pressure from air of the sea 10 kPa

$$\rho$$ gh

p gh

F/A

p₁v₁=p₂v₂

temperature of the gas constant

volume of the gas constant

pressure of the gas constant

none of the these

Force $\times$ distance moved in the direction of the force

Force $\div$ distance moved in the direction of the force

Force $\times$ perpendicular distance of the force

Force $\times$ distance moved by the object

Energy cannot be created or destroyed but can be transfer from one store to another

Energy can be created or destroyed but can be change from one form to another

Energy cannot be created or destroyed but cannot be transfer from one store to another

Energy can be created or destroyed but cannot be changed from one form to another

$$\frac{1}{2}$$ m $$v^2$$

mgh

mgh²

$$\frac{1}{2}$$ $$m^2$$ $$v$$

nuclear energy $\rightarrow$ thermal energy $\rightarrow$ kinetic energy $\rightarrow$ electrical energy

chemical energy $\rightarrow$ thermal energy $\rightarrow$ kinetic energy $\rightarrow$ electrical energy

nuclear energy $\rightarrow$ thermal energy $\rightarrow$ electrical energy $\rightarrow$ kinetic energy

chemical energy $\rightarrow$ thermal energy $\rightarrow$ electrical energy $\rightarrow$ kinetic energy

Biomass, Nuclear, Hydroelectric

Biomass, Tidal, Geothermal

Hydroelectric, Solar, Fossil Fuels

Biomass, Wind, Nuclear

Nuclear Fission

Nuclear Fusion

Nuclear Decay

Nuclear Bomb

Atoms vibrate and colliding with neighbouring atoms

Free electrons vibrate and colliding with neighbouring atoms

Free electrons moves and colliding with other electrons and atoms

Atoms vibrate and collide with neighbouring atoms, free electrons move and collide with other electrons and atoms

where molecules at the surface of liquid gain energy from surrounding, break bonds and escape as gas molecules

where molecules at the surface of liquid lose energy from surrounding, break bonds and escape as gas molecules

where molecules at the surface of liquid gain energy from surrounding, break bonds and escape as liquid molecules

where molecules at the surface of liquid gain energy from surrounding, break bones and escape as gas molecules

Thermal energy needed to change the state of substance from liquid to gas without change in temperature

Thermal energy needed to change the state of substance from solid to liquid without change in temperature

Thermal energy needed to change the temperature of 1 kg of substance from liquid to solid without change in temperature

Thermal energy needed to change the state of 1 kg of substance from gas to liquid without change in temperature

The temperature at which water changes to steam

The temperature at which liquid changes to gas

The temperature when liquid boils

The temperature when water boils

vibrations of particles are parallel to the direction of the wave

vibrations of particles are perpendicular to the direction of the wave

consists of compression and rarefaction

consists of crests and troughs

transverse wave with transfer of energy through vibrations of particles

electromagnetic wave with transfer of energy through vibrations of particles

longitudinal wave with transfer of energy through vibrations of particles

ultrasound wave with transfer of energy through vibrations of particles

refraction away from normal occur

refraction towards normal occur

reflection occur

total internal reflection occur

Real, Upright

Virtual, Upright

Real, Inverted

Virtual, Inverted

Current

Charge

Potential Difference

Energy

opposes the current flow in the circuit

ratio of potential difference to the current in the circuit

reduces the current flow in the circuit

potential difference directly proportional to the current in the circuit

The direction of induced e.m.f is always opposes the change that producing it

The cutting of or change in magnetic field which produce induced e.m.f hence induced current

The magnitude of induced e.m.f is directly proportional to the rate of change or cutting of magnetic field lines

The magnitude of induced e.m.f is inversely proportional to the rate of change or cutting of magnetic field lines

Increase in wavelength of light as galaxies moving away from Earth

Increase in frequency of light as galaxies moving away from Earth

Hydrogen runs out and stars expand.

Galaxies come together a long time ago

The time-taken for half of the neutrons to decay

The time-taken for half of the protons to decay

The time-taken for half of the mass to decay

The time-taken for half of the nuclei to decay

Supernova

Black Hole

Neutron Star

Main Sequence Star

Mercury, Earth, Mars, Venus, Jupiter, Saturn, Uranus, Neptune

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Venus, Mercury, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Neptune, Uranus, Saturn, Jupiter, Mars, Earth, Venus, Mercury