Energy Flashcards
(29 cards)
How fast does light energy travel?
300 million metres per second
What are the different types of energy?
Kinetic, heat, light, sound, electrical, potential
What unit is energy measured in
Joules (J)
What are the different types of potential energy?
Gravitational, chemical, elastic, nuclear
What are the types of heat transfers
Conduction
Convention
Radiation
What is radiation
When heat spreads outwards
What is sound energy
Vibrations that travel through the air in wave to make sounds
What is energy transfer?
When energy passes from one object to another
Does a high pitched sound have a longer or shorter wavelength
Shorter
What are the main features of an energy efficient home
Solar panels
Windows
Insulation
Shady trees
What are acoustics?
The science of sound
What is chemical energy?
Energy stored within a substance, such as fuel or food, that may be released when the substance is burnt or digested
What is a concave lens?
A lens that curves inwards
What is a concave mirror?
A mirror that curves inwards
What is conduction?
Heat transfer between two objects in contact
What is convection?
The transfer of heat in a liquid or gas
What is dispersion?
The splitting of white light into colours of the rainbow
What is a convex lens?
A lens that curves outwards
What is a convex mirror?
A mirror that curves outwards
What is frequency ?
The number of waves that travel past a given point
What is Dispersion?
The splitting of white light into colours of the rainbow
What is an echo?
A reflected sound
What is Elastic potential energy?
Energy stored within a stretched or compressed object, such as a spring or elastic
The longer the sound wave……
The higher the pitch
