unit 3 topic 3 Flashcards
(25 cards)
what is temperature
A relatable measure of how hot or cold something is measured on a scale
what is energy
The ability to do work and to cause change (chemical or physical)
is energy matter true or false
true
what is thermal energy
the energy created by the movement or vibration of particles
What is the three most important ideas of the Particle Model?
the particles all have spaces between them
There always in motion
The particles are close together
What is the fourth point in the particle model?
The motion of the particles increases when the temperature increases.
The motion of the particles decreases when the temperature decreases
What are the two features of energy?
changes happen when their is a difference of energy.
Energy is always transferred in the same direction
what unit is energy measured in
it is measured In joules
how much is a joule
is 0.01 kilocalorie
What is the Law of Conservation of Energy
Energy cannot be created or destroyed. It can only be transformed from one type or another or passed from one object to another
Why is it so hard to test the particle model to see if it is correct?
because particles are to small to just see with your eyes
what was one of idea or discovery of James joule
He build many genius temperatures and discovered the relationship of mechanical work. He created the unit of energy “joule”
what was one of idea or discovery of Anders celsius
he made his invented the celsius scale
what was one discovery or idea of lord kelvin
he invented the scale kelvin with a point of absolute zero
how is thermal energy different form temperature
temperature is the measure of heat and thermal energy is the molecules in a substance
Think of a form of energy that you knew by name before you studied Topic 3.
powerlines
windmills
lightbulbs
batteries
what are some examples of thermal energy
hot-air balloons, ovens, and a hot tub
what state material takes a fixed shape….
a solid
which state of matter takes the shape of its container
gas
which state of matter always fills whatever container it is in
water
energy is not a _______ and cannot be ________ it does not take up _________.
- substance
- weighed
- space
what is the first point of the particle model
all substances are made of tiny particles too small to be seen
what is the second point of the particle model
the particles are on motion if they are gases liquids but not solids.
what is the third point of the particle model
the particles have spaces between them
