Blue Cards Flashcards
(24 cards)
When warm air rises then cools and sinks
Convection
What a u value?
A measure of how good an insulator a material is
Specific heat capacity
E= m X c X ø
Power is measured in
Watts
Payback time is
The time it takes to get back the cost of installing an energy efficient device from the money saved on heating bills
energy =
Power x time
A method of generating electricity
Nuclear power
This device can step up the voltage
Transformer
An example of a transverse wave
Light
Rarefaction
The part of a longitudinal wave which has been stretched further apart
The distance between the top of two waves
Wave length
How many waves there are per second
Frequency
When a wave bounces off a surface
Reflection
What is refraction
When a wave speeds up or slows down depending on the medium in which it is traveling in
The Doppler effect is…
The change in the observed wavelength and frequency of a wave when the wave source is moving
Some stars appear red because…
The Galaxy is expanding- red shift
What is the name for the transfer of thermal energy in a metal?
Conduction
What is the poem to help remember the order of types of radiation
R M I V U E - X
What does the r stand for in the types of radiation poem?
Randy
Radio waves
What does the m stand for in the type of radiations poem?
Men
Microwaves
What does the I stand for in the type of radiations poem?
Ingest
Infrared
What does the V stand for in the type of radiations poem?
Viagra
Visible light
What does the U stand for in the type of radiations poem?
Until
Ultra-violet
What does the E- X stand for in the type of radiations poem?
Explosions
X-rays
