Topic 10: Energy Flashcards
What is the Law of Conservation of Energy
The law that states Energy can’t be created or destroyed
What is Energy?
Anything “that can do work”
What is Gravitational?
The potential Energy of an object off the ground
What is Chemical?
Energy stored in chemical that when react make burning reactions, sound or produce heat
What is Elastic?
Energy stored by an elastic object like an elastic or trampoline
What is Nuclear?
Energy stored in the nucleus of atoms
What is Electrical?
Energy supplied to homes to power appliances and machines
What is Kinetic?
Energy possessed by moving objects
What is Heat?
Energy that causes gain in temperature
What is light?
Energy that may be released
What is Sound?
Energy detected by the ear
What is Efficiency?
The amount of energy supplied to a device
What is Conduction?
The transfer through collisions between particles
What is Deciduous?
Tree that loses its leaves in autumn and winter but regain them in spring and summer
What is Luminous?
Something that releases its own light
What is Incandescent?
Light that is let off with heat
What is Bioluminescent?
Living things that let off light
What is Scattered?
A way of describing the direction of light
What is a Visible Spectrum?
Different colours combined to make white light
What is Dispersion?
The separation of colours that make white light
What is Electromagnetic Radiation?
Energy such as infrared, invisible light, X-ray, radio waves and gamma rays released by magnetic or electric fields
What is a Electromagnetic Spectrum?
A range of wavelengths of energy radiated as electric or magnetic fields.
What are Radio Waves?
Low energy electromagnetic waves with low frequency and long wavelength
What is Infrared Radiation?
Invisible radiation emitted by warm objects
What are Rays?
Narrow beams of light
What is Concave?
A inward curved lens
What is Convex?
An outward curved lens
What is a Focal Point?
The point where light rays close in
What are Vibrations?
Repeated fast, back and forth movement
What is Compression?
The process of pushing a material into itself
What are Rarefactions?
The layers of air particles that are spread apart
What are sound waves
Vibrations in the air
What is Frequency?
Number of vibrations or wavelengths in one second
What are Hertz?
The unit used for frequency
What is Pitch?
The high or low part of sound
What is Wavelength?
The distance between two neighbouring crests or troughs of a wave.
What is Amplitude?
The maximum distance that a particle moves away from its undisturbed position
