Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
69 Cards in this Set
- Front
- Back
|
What is the average of the total kinetic or thermal energy of all the molecules in an object?
|
temperature
|
|
|
What do thermometers rely on?
|
expansion
|
|
|
What do thermometers do when it gets hot?
|
expand
|
|
|
What do thermometers do when it gets cold?
|
contract
|
|
|
What substances do thermometers use?
|
mercury or alcohol
|
|
|
What do refrigerator thermometers use to determine temperatures?
|
bending metal
|
|
|
What are the 3 common ways to measure temperature?
|
Fahrenheit
Celsius Kelvin |
|
|
Which type of measure for temperature does not use a degree symbol?
|
Kelvin
|
|
|
What is the fp and bp in Fahrenheit?
|
fp = 32
bp = 212 |
|
|
What is the fp and bp in Celsius?
|
fp= 0
bp = 100 |
|
|
What is the fp and bp in Kelvin?
|
fp = 273
bp = 373 |
|
|
Which scale is based on absolute zero?
|
Kelvin Scale
|
|
|
What is absolute zero in F (Fahrenheit?
|
460 F
|
|
|
What is absolute zero in C (Celsius)?
|
-273 C
|
|
|
What happens at absolute zero?
|
the temperature of an object cannot be any lower and all atoms stop moving.
|
|
|
What is absolute zero set at?
|
zero Kelvin
|
|
|
How does energy transfer?
|
As heat
|
|
|
What is the transfer of energy between particles of two temperatures called?
|
heat
|
|
|
Hot objects transfer heat to what kind of objects?
|
cold
|
|
|
What is caused by the rapid transfer of energy as heat?
|
burns
|
|
|
Which are better conductors, metals or non-metals?
|
metals
|
|
|
What slows the transfer of heat?
|
Insulators
|
|
|
Which gases are good insulators?
|
Noble Gases
|
|
|
Why does metal feel cold?
|
It pulls heat away when touched
|
|
|
Which transfer of energy does not require physical contact between objects?
|
Radiation
|
|
|
What does wood do to the transfer of heat?
|
slows down
|
|
|
Radiation transfers energy through what kind of waves?
|
electromagnetic waves
|
|
|
How are homes heated?
|
Through convection currents
|
|
|
What is the only way to transfer heat in outer space?
|
radiation
|
|
|
Which are better conductors, solids or gases?
|
solids
|
|
|
What happens to air in a convection current?
|
warm airs rises carrying its energy with it
|
|
|
Conduction involves direct _________ with an object.
|
contact
|
|
|
What is an example of energy transfer by Conduction?
|
-pan on a hot stove
-marshmallow on a stick over a fire -hand on a piece of ice |
|
|
What is an example of energy transfer by Radiation?
|
Getting a sunburn on a sunny day
|
|
|
What is an example of energy transfer by Convection?
|
A furnace heating a room
|
|
|
When does conduction take place?
|
When two objects in contact have different temperatures
|
|
|
Specific Heat is the amount of heat required to raise the temperature of 1 ___ of a substance by 1 K or 1 C
|
Kg
|
|
|
What units are used to measure heat?
|
joules or calories
|
|
|
What temperature do most humans feel most comfortable?
|
21-25 C or 70 to 77 F
|
|
|
What kind of system uses a device to raise the temperature of a substance?
|
heating
|
|
|
What heating systems use warmed air or water?
|
Solar
|
|
|
What does a solar heating system use?
|
warmed air or water
|
|
|
What is the difference between active Solar heating and Passive Solar heating?
|
Active Solar heating uses a pump.
|
|
|
What does passive solar heating use?
|
radiation
|
|
|
What happens to usable energy during energy transfers?
|
Energy Decreases
|
|
|
How do hot water pipes lose energy through transfer?
|
Through radiation and conduction
|
|
|
What tries to minimize unwanted energy transfers?
|
insulation
|
|
|
How do we measure the effectiveness of insulation?
|
By its R Value
|
|
|
What do Cooling systems use to transfer energy away from the air?
|
evaporation and condensation
|
|
|
What transfers large amounts of energy as it changes state?
|
refrigerant
|
|
|
What is a common refrigerate which evaporates and takes heat away?
|
Freon
|
|
|
What is force that opposes motion between two surfaces that are touching?
|
friction
|
|
|
What charge do alpha particles have?
|
positively charged
|
|
|
What do you need to determine speed?
|
time and distance
|
|
|
What is the SI unit of force which was named for the scientist who described the relationship between motion and force?
|
newton
|
|
|
What are the units for energy and work?
|
Watt
|
|
|
What is a light wave bending through a lens?
|
refraction
|
|
|
What are the units for velocity?
|
m/s
|
|
|
What are the units for loudness or softness of sound?
|
decibel
|
|
|
What lens can focus light?
|
convex lens
|
|
|
What is a light wave bouncing off a mirror?
|
reflection
|
|
|
The body paragraph of all paragraphs in an essay begin with ___________
|
topic sentence
|
|
|
A writer must provide enough ___________ for his/her main ideas within the paragraph.
|
support
|
|
|
What is the first paragraph of any essay?
|
introduction
|
|
|
This tells the reader what the writer plans to prove in his/her writing.
|
thesis statement
|
|
|
What is always restated in the conclusion?
|
thesis statement
|
|
|
What part of the essay sums up the essay and leaves the reader with closing thoughts?
|
conclusion
|
|
|
An essay has usually one or more of these. They help make a well developed paragraph
|
body paragraphs
|
|
|
These help the writer's sentences flow smoothly.
|
transitions
|
