Physics Flashcards
Red light has a longer wavelength than what light?
BLUE 💙
Evidence from red shift suggests what?
The universe is expanding
What is cosmic microwave background radiation?
A form of electromagnetic radiation filling the universe.
What theory is the only theory that can explain the existence of cmbr?
BIG BANG THEORY 💥
In convection what happens when a gas / Liquid is heated?
The particles move faster
So they move further apart
Decreasing the density
So the hot fluid rises above surrounding cooler fluid
Why do space blankets work?
They reflect infa-red waves from your body back to the body
Which will absorb them
So less heat lost
Objects loose heat faster when?
They’re hotter than their surroundings
Have a large surface area
Have a dark surface
Small volume
Where is chemical energy stored?
In food, fuels and batteries
Where is neclear energy stored?
Inside the necleus of atoms
Where is elastic potential energy stored?
Anything stretched or squashed (a spring)
Where is kinetic energy stored?
In a moving object
