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KS3 Physics vocab.
Common Entrance (KS3) Physics vocabulary
| Term | Definition |
|---|---|
| AMMETER | An instrument used for measuring current in a circuit. |
| AMPERE | The unit for electrical current |
| AMPLITUDE | The size of a sound vibration. A higher amplitude produces a louder sound. |
| CURRENT | The unit for the flow of electricity along a wire. Measured in AMPERES. |
| DAY | The time it takes a planet to revolve once on it axis. |
| DENSITY | The mass of 1 cm³ of an object. Calculated using the formula MASS ÷ VOLUME |
| DIFFUSION | The movement of tiny particles like atoms or molecules that cause them to mix together or move across thin membranes. Diffusion happens because the particles in a substance are constantly moving. Diffusion explains some important processes in biology such as the movement of gas in the alveoli. |
| DIODE | An electrical component that only allows a current to flow in one direction. |
| DISPERSION | Name the process of white light being split into a spectrum by a prism |
| ECLIPSE of the sun | When the Moon comes between the Sun and the Earth causing a shadow of the Moon to fall on the Earth. |
| FORCE | A Push or a pull. Measured in NEWTONS (n). It cause an object to SPEED UP, SLOW DOWN OR CHANGE SHAPE. |
| FRICTION | A force which causes a moving object to slow down. |
| FUSE | A short length of wire designed to melt when the current flowing though it gets too high. |
| GAS | One of the three states of matter. (The other two are solids and liquids). |
| GRAVITATIONAL ENERGY | The energy something has caused by it's height |
| GRAVITY | The force that pulls all objects down towards the centre of the Earth. |
| INSULATOR | A material that does not allow electricity or heat to flow through it easily eg wood, glass or plastic to flow through it |
| JOULE | The metric unit for energy |
| KILOGRAM | The metric unit for MASS |
| KINETIC ENERGY | The energy stored in a moving object |
| LDR | Light Dependent Resistor. A component that has a high resistance in the dark and a low resistance in the light |
| MEASURING CYLINDER | Name an instrument you would use to measure the volume of a liquid: |
| MOON | A natural satellite of the Earth. Orbits the Earth once every 28 days. |
| NEWTON | The unit for force (and weight) |
| OPAQUE | A word used to describe a material that does not allow light to pass through it. Examples Brick and wood. |
| PARALLEL CIRCUIT | A type of circuit where the current divides and follows more than one path. |
| PERMEABLE | A word used to describe a type of rock that allows water to soak into it. Example are chalk and limestone. |
| PITCH | Describes how high or low a sound is. |
| PLANET | An object in orbit around the Sun. |
| PRESSURE | The force on 1 cm² of a surface. Calculated using the formula FORCE ÷ AREA. |
| REED SWITCH | What name is given to the kind of switch that can be closed using a magnet. |
| REFLECTION | The word that describes what happens when light bounces off a smooth surface (eg a mirror). |
| REFRACTION | The name is given to the bending of light. |
| RESISTANCE | The property of a conductor that reduces the current flowing through it. |
| SATELLITE | Is the moon a satellite, planet or star? |
| SPECTRUM | What is the name given to the rainbow of colours produced by a prism? |
| SPEED | Calculated as distance ÷ time |
| SPEED | what is being calculated using the formula DISTANCE ÷ TIME |
| STAR | The object at the centre of any solar system . It supplies the solar system with energy |
| STRAIN ENERGY | The form of energy is in a stretched elastic band or compressed spring. |
| TEMPERATURE | A measure of how hot or cold something is. Measured using a thermometer in degrees Celcius (°C) |
| THERMOMETER | An instrument used to measure temperature. |
| UPTHRUST | The force that pushes up on a floating object |
| VOLUME (sound) | How loud or soft a sound is. Decided by the AMPLITUDE of the sound wave. |
| WEIGHT | Weight is a force on an object caused by gravity. Measured in newtons. |
| YEAR | The time it takes a planet to complete one full orbit around the sun. |
| Unit of PRESSURE | Newtons per square centimetre (N/1 cm²) |
| Unit of DENSITY | Grams per cubic centimetre (g/cm³ ) |
| FREQUENCY | The number of sound vibrations a second. A higher frequency causes a higher pitch. |
| CHEMICAL ENERGY | The energy stored in a battery, firework rocket, or any kind of fuel such as coal. |
| ELECTRICAL ENERGY | A battery converts chemical energy into electrical energy. |
| RESISTOR | A component that reduces the current in a circuit |
| LED | Light Emitting Diode. A special diode that glows when electricity passes through it. |
Created by:
MikeCurtis
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