Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biophysics > Heat and Temperature > Flashcards

Heat and Temperature Flashcards

1
Q

are interrelated and sometimes the difference between the two can be a bit confusing

A

heat and temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

deals with thermal energy

A

heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

is associated with molecular kinetic energy

A

temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

is a measure of the average translational kinetic energy associated with the disordered motion of atoms and molecules.

A

temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

property of a system which determines whether or not heat is transferred to or from an object.

A

temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

can be described as the determination of the object’s sensation of warmth or coldness. in a qualitative manner

A

temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

how “hot” or “cold” an object is

A

temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

is transferred to the object (ex. stove heats pan)

A

heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

____ refers to the amount of energy in an object while ____is the measurement of hotness or coldness of an object.

A

heat
temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

___depends on mass of the substance, however; ____does not depend on the quantity of matter.

A

heat
temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

____can be measured directly using a thermometer but ___ cannot be measures directly with a device; mass, temperature and specific heat capacity must be known.

A

temperatuer
heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

_____ is the measure of total kinetic energy of all molecules in a substance while ____ is the measure of average kinetic energy of molecules in a substance.

A

heat
temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

temperature scales (3)

A

fahrenheit
celsius
kelvin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

classic English system for measuring temperature, created by Daniel Gabriel Fahrenheit in 1714

A

Fahrenheit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

divides the difference between boiling point and freezing point of water into 180 degrees.

A

Fahrenheit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

metric system of measuring temperature; devised by Anders Celsius in 1744; originally called degrees Centigrade

A

celsius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The scale is divided into 100 degrees between freezing point of water and boiling point of water

A

celsius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

who devised Fahrenheit

A

Daniel Gabriel Fahrenheit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

who devised Celsius

A

Anders Celsius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

who devised Kelvin

A

William Thomson

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

devised by William Thomson (a.k.a. Lord Kelvin); temperature scale designed so that zero degrees K is defined as absolute zero

A

Kelvin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

the temperature at which all thermal motion ceases based on the classical description of thermodynamics

A

absolute zero

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

formula of conversion of C to F

A

F = 1.8(oC) + 32

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

formula of conversion from F to C

A

C = oF-32/1.8

25
Q

conversion of oC to K

A

K = C + 273.16

26
Q

state that exists when two bodies that are in contact with each other no longer transfer heat between them.

A

thermal equilibrium

27
Q

It means that an object has the same temperature throughout its interior.

A

thermal equilibrium

28
Q

If two objects are in thermal equilibrium with a third, then they are in thermal equilibrium with each other.

A

zeroth law of thermodynamics

29
Q

formula of zeroth law of thermodynamics

A

if TA=TC and Tb=Tc then Ta=Tb

30
Q

When heat is given to a body one or more of the following may happen

A

increase in temperature
Increase in length ( area, volume)
Change in state of the body (ex. Solid to liquid)
change in chemical composition
change in electrical properties
change in color

31
Q

is a consequence of change in the average separation between its constituent atoms or molecules.

A

thermal expansion

32
Q

at ordinary temperatures, molecules vibrate with small amplitude but as the temperature ____, the amplitude increases causing an expansion of the whole object

A

increases

33
Q

Experiments show that the increase in length or expansion of a solid depends of three factors:

A

material of which the solid is made
original length of material
change in temperature

34
Q

to calculate the magnitude of an expansion, the equation is used:

A

ΔL = aLoΔT

35
Q

The expansion of an ____ of a flat substance is derived from the linear expansion in both directions:

A

area

36
Q

area expansion formula

A

ΔA = 2aAoΔT

37
Q

three dimensions expand

A

volume expansion

38
Q

gamma is equivalent to

A

2a

39
Q

volume expansion formula

A

BVoΔT

40
Q

for solids, B is equal to

A

3a

41
Q

do execrises in thermal expansion

A

8

42
Q

When energy is transferred to a substance by heating it, the temperature of the substance usually rises.

A

heat capacity

43
Q

The amount of heat energy needed to raise the temperature of a substance is proportional to the temperature change and to the mass of the

   substance.
A

heat capacity

44
Q

specific heat capacity of water

A

4.186 J /oC Kg

45
Q

amount of heat formula

A

CΔT = mcΔT

46
Q

Q is positive if ΔT is positive; that is,

A

if heat is added to a system.

47
Q

Q is negative if ΔT is negative; that is, if

A

heat is removed from a system

48
Q

the amount of energy transferred via heating necessary to raise the temperature of a substance by one degree.

A

heat capacity

49
Q

heat capacity per unit mass

A

specific heat or specific heat capacity

50
Q

do practice problems 1-5

A

+1

51
Q

if you double the thickness of a wall built from a homogenous material, the rate of heat loss for a given temperature difference across the thickness will

A

become one-half of its original value

52
Q

how many calories are equal to one BTU

one calorie= 4.186 J
one BTU = 1054J

A

251.8 cal

53
Q

on a sunny day at the beach, the reason the sand gets so hot and the water stays relatively cool is attributed to the difference in which property of the sand

A

specific heat

54
Q

the reason ocean temperatures do not vary drastically is that

A

water has a relatively high specific heat

55
Q

the heat required to change a substance from the solid to the liquid sate is referred to as the

A

heat of fusion

56
Q

smallest unit of heat energy

A

joule

57
Q

phase changes occur

as temp decreases
as temp increases
as temp remains the same

A

as temp remains the same

58
Q

the amount of heat necessary to raise the temperature of 1 gram of water by 1oC is referred to as

A

calorie

59
Q

measure of average kinetic energy

A

temperature

Biophysics (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions