# Fisic

## Fisic has created 10 sets

#### Scientific method

9 terms
Observation an unbiased accurate report of an event. Observations may be made directly using our senses (seeing … Hypothesis an 'educated guess' based on observations. Prediction based on the hypothesis. If the guess is the correct one then you can forecast what should happen wh… Experiment an expt is designed to test a prediction. Data results (measurements observations or information gathered during an experiment. Graphs tables and s… Conclusions data is interpreted to show if hypothesis is true or false. You accept reject or change the hypothes… Publish write a report so that expts. can be repeated. Can be published in journals magazines newspapers www…

#### Leaving Cert Physics Equations

50 terms
v = u + at velocity ma Force Fd Torque mv Momentum (p) ½mv² Kinetic Energy mgh Potential Energy Fs Work

#### Electricity

13 terms
Coulomb's Law states that the force between two point charges is proportional to the product of the charges and in… Electric Field Strength (E) is the force per unit charge. Potential Difference (p.d.) between two point is the work done in bringing a charge of one Coulomb from one point to the other. Volt The potential difference between two points is one volt if one Joule of work is done when bringing a… The potential at a point refers to the work done in bringing unit charge from that point to earth. Capacitance of a conductor is the ratio of the charge on a conductor to its potential. Current is a flow of charge.

#### Electricity

13 terms
Coulomb's Law states that the force between two point charges is proportional to the product of the charges and in… Electric Field Strength (E) is the force per unit charge. Potential Difference (p.d.) between two point is the work done in bringing a charge of one Coulomb from one point to the other. Volt The potential difference between two points is one volt if one Joule of work is done when bringing a… The potential at a point refers to the work done in bringing unit charge from that point to earth. Capacitance of a conductor is the ratio of the charge on a conductor to its potential. Current is a flow of charge.

#### Heat

8 terms
Temperature of an object is a measure of the hotness or coldness of that object. Thermometric Property is any physical property that changes measurably with temperature. Specific Heat Capacity of a substance is the heat energy needed to change one kilogram of the substance by one Kelvin. Specific Latent of Fusion (l) is the amount of heat energy need to change 1 kg of the substance from a solid to a liquid without a… Specific Latent of Vaporisation (l) is the amount of heat energy needed to change 1 kg of the substance from a liquid to a gas without a… Conduction is the movement of heat energy through a substance by the passing on of molecular vibration from mol… Convection is the transfer of heat through a fluid by means of circulating currents of fluid caused by the heat.

#### Mechanics

30 terms
Displacement is distance in a given direction. Speed is the rate of change of distance with respect to time. Velocity is the rate of change of Displacement with respect to time. Acceleration is the rate of change of Velocity with respect to time. Scalar Quantity is one which has magnitude only. Vector Quantity is one which has both magnitude and direction. Force is that which can cause an acceleration.

#### Semiconductors and Electromagnetic Induction

11 terms
Semiconductor is a material whose resistivity is between that of a good conductor and a good insulator. Intrinsic Conduction is the movement of charges through a pure semiconductor. Extrinsic Conduction is the movement of charges through a doped semiconductor. Doping is the addition of a small amount of atoms of another element to a pure semiconductor to increase it… n-type semiconductor is a semiconductor in which electrons are the majority charge carriers. p-type semiconductor is a semiconductor in which holes are the majority charge carriers. Ampere is that current which, if flowing in two, infinitely long parallel wires, of negligible cross-sectio…

#### Modern Physics

14 terms
Ionisation occurs when an atom loses electrons. Thermionic Emission is the giving off of electrons from the surface of a hot metal. Photoelectric Effect is the emission of electrons from a metal due to light of a suitable frequency falling upon it. Photon is a discrete amount (packet) of electromagnetic radiation. Electron Volt is the energy lost or gained by an electron when it moves through a potential difference of one volt. Atomic Number of an atom tells us the number of protons present in the atom. Mass Number of an atom tells us the number of protons plus neutrons present in the atom.

#### Optics Waves Light Sound

22 terms
Real Image is an image formed by the actual intersection of light rays. Virtual Image is formed by the apparent intersection of light rays. Refraction is the bending of light as it passes from one medium to another. The Refractive Index of a Medium is the ratio of the sine of the angle of incidence to the sine of the angle of refraction when light… Snell's law of refraction states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction i… Transverse wave is a wave where the direction of vibration is perpendicular to the direction in which the wave trave… Longitudinal Wave is a wave where the direction of vibration is parallel to the direction in which the wave travels.
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