Cahpter 10 Transferring And Transforming Energy Flashcards
Energy
Describes anything that can do work
Law of conservation of energy
Energy cannot be created or destroyed or destroyed only transferred
Gravitational energy
Potential energy of an object elevated above the ground
Elastic energy
Energy stored by an elastic object that is stretched such as a spring or a rubber band
Chemical energy
Energy stored in chemical that when reacted together such as burning reactions realize heat sound or light
Nuclear energy
Energy stored in the nucleus of atoms that releases energy slowly such as in a nuclear for quickly such as in a nuclear explosion
Electrical energy
Energy supplied to homes by power lines and available to your appliances via power outlets in the home
Kinetic energy
Energy processed by objects that are moving
Heat energy
Energy that causes objects to gain temperature
Light energy
Energy that may be released for example when an object is hot or by a nuclear reaction in star
Sound energy
Energy carried by air in a room and detected by the ear
Potential energy
Stored energy that when realeaed is converted to other form such as kinetic sound heat or light energy
Efficiency
A fraction of a energy supplied to a device as a useful energy.it is usually expressed as a percentage
Conduction
Transfer of heat through collisions between particles
Insulator
A material that is a poor conductor of heat
Convection
Transfer of heat through the flow of particles
Radiation
A method of heat that transfers that does not require particles to transfer
Radiant heat
Heat transferred by radiation as from the sun to earth
Reflected
Bounced off
Transmitted
Passed through something such as light or sound passing through air.
Absorbed
Taken in
Deciduous
Describing plants that lose there leaves during autumn or winter
Luminous
Realising its own light
Incandescent
Describes an object that light when it is hot
Bioluminescent
Describes living things that realises light energy
Non luminous
A object that does not produce light it self
Scattered
Describe light sent in many directions by small particales in a substance
Visible spectrum
Different colours that combine to create a white light this separates rainbows
Dispersion
Separation of colours that make up white light,
Electromagnetic radiation
A radiant energy such as radiation waves which is then realised by a magnetic force of electric field
Electromagnetic spectrum
Complete length of wavelengths of energy radiated as electric and magnetic fields
Radio waves
Low energy electromagnetic waves with a much lower frequency no longer wavelength than visible light
Infra-red radiation
Invisible radiation emitted by all warm objects
Ultraviolet radiation
Invisible radiation similar to light but with a slightly higher frequency with more energy
X rays
Electromagnetic waves that can be transmitted through solids and provide information
Rays
Narrow bean of light
Concaves
Refer to a lenses that is curved donwards
Conveys
Refers to a lens that is curved outwards
Focal point
The point when the light rays close in towards a point
Lateral inversion
Sideways reversal of images in a mirror
Refraction
Change in the speed of light as it passes
Normal
Line drawn perpendicular to a surface
Image
Image of an object
Vibration
Back and forth movement
Compression
Process of pushing a material into itself
Rarefactions
Particularly spread apart
Sound waves
Vibrations of partials in the air
Hertz
Unit of frequency
Frequency
Number of vibrations in one secound
Pitch
The highness and the lowness of a sound
Wavelength
Distance between two neighbouring crest
Amplitude
Maximum distance that a particle moves away
Reverberation
Longer lasting sound
