Unit Four Flashcards
Definition: Thermal Energy
(Heat) total energy of all of the particles in a material or object
Definition: Thermometer
Mechanical or electrical devices for measuring temperature
Definition: Scale
A series of measured sections that are marked and numbered and used for measurement, basically a ruler.
Definition: Celcius Scale
Not very common measurement, measurement is degrees
What is the freezing point on the Celcius scale
0
What is the boiling point on the Celcius scale
100degrees
Definition: Kelvin Scale
Water freezes at 273
Water boils at 373
Definition: Sensor
A material which is affected by changes in some features of the environment, Such as temperature
Definition: Signal
Information about temperature
Definition: Responder
A pointer, light, or pther mechanism that uses the signal in some way
Definition: Thermocouple
Dependant on temperature, two twisted wires that expand and contract with heat
Definition: Bimetallic strips
Two metals joined together, curls and uncurls
Definition: Recording Thermometer
A bimetallic strip connected to a paper which records the fluctations
Definition: Infrared Thermogram
Records radiation,shows different colours for different heat signatures
Who is Galileo
He invented the early thermometers
Definition: Energy
The measure of somethings ability to do work
Change happens when there is a—–in—–.
Difference
Energy
Energy is always transferred from—-energy source to a—-energy source.
High
Low
Three steps of calibrating a thermomterer
Step one Liquid level is marked as 0for ice Step two Boiling level is 100 Step three Scale is divided into 100
To calibrate a thermometer accurately where should you be?
Sea level
Definition:Contract/Condense
To decrease in Volume
Definition: Expand
Increase in volume
Heat causes—–
Cool causes—–
Expansion
Contraction
Definition: Heat capacity
The amount of thermal energy that warms or cools an object by one degree
Definition: Specific heat capacity
The Amount of heat that heats one gram by one degree
Definition:Change of state(8)
Sublimation Solids Gases Vaporization Melting Freezing Condensation Liquid
Definition: Evaporative cooling
Faster particles(liquid) evaporate Slower ones left behind creating kinetic energy(cooling it)
Definition:Phase changing
During change temp does not change
Ways to transfer energy are…(3)
Radiation
Convection
Conduction
Definition:Energy Source
An object or material that can transfer energy to other objects or materials
Definition:Radiation
Transferring energy without any movement
Definition: Radiant energy
Energy transferred by radiation
Radiant energy does…(3)
Like waves
Can be absorbed and reflected
They travel through empty space at a speed of 300000km
Definition: Thermal consuction
Transferring energy through collisions
Definition: Heat insulators
Very poor conductors
Definition: Convection
A warm fluid that carries thermal energy from place to place
Definition: Potential energy
It has the potential to do something
Definition: Kinetic energy
What is happening in the present
Definition: Chemical energy
Kind in our body, also in batteries
Definition:Energy Converters
Changes energy from one form to another
Definition: Mechanical Forces
A source of thermal energy caused by friction
Definition:Geothermal energy
Energy we harness from the earths interior
Definition: Converters
Generate electrical energy
Definition: Passive energy
Using materials and in the structure to absorb, store and release solar energy
Definition: Active solar
Convert light energy absorbed by solar collectors into electrical
Definition: Wind energy
Windmills
Definition: Fossil Fuels
The mushy part of fossils made into chemicals(gas)
Definition: Global Warming
The heat from fossil fuels being trapped in the earths atmosphere
Definition: Thermal Pollution
Accidentally warming up the environment
Definition: Cogeneration
Using waste heat to heat heeded areas
Ways to conserve(save) energy(5)
- Carpool
- Install programable thermostat
- Reduce energy use
- Reduce showers
- Insulate homes and water lines
- Etc.
What happened in the precambrian era?
Rodinia
What happened in the Paleozoic era
First sign of life, pange
What happened in the Cenozoic era?
People
What happened in the mesozoic era?
Dinosaurs, plants, bacteria, birds, mammals
