Physiscs Flashcards
(30 cards)
What energy store is found in hot objects
Thermal energy
What energy store is found in fast moving objects
Kinetic energy
What is the term used to describe energy transfers in a solid
Conduction
What is the term used to describe energy transfers in a liquid
Convection
What is the term used to describe energy transfers that require no particles
Radiation
3 states of matter?
Solid, Liquid, Gas
Solid to liquid is..
Melting
Liquid to solid is..
Freezing
Gas to liquid is..
Condensation
Liquid to gas is..
Boiling or Evaporation
What is a force?
A push or pull in a certain direction
Name the force that slows the decent of falling objects
Air resistance
Name a unit of speed
m/s, mph or km/h
What is the equation for calculating speed
Speed = Distance/Time
What does a flat line on a distance time graph mean
That the object is stationary
In a transverse wave, which direction to particles move in direction to the wave
They move perpendicular to the wave
In a longitudinal wave, which direction to particles move in direction to the wave
They move parallel to the wave
What is the reflection of sound waves called
Echo
What term describes the change in direction of light as it enters a more/ less dense medium
Refraction
What is the definition of frequency
The number of waves that pass a certain point per second
How long does it take the earth to orbit the sun
365 days
Why do we have day and night on Earth
The Earth’s rotation
What do we call an object that orbits a planet
A satellite
What units are used to measure distances in space
Light years
