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Heat Science Quiz CHAPTER 2

Total questions: 42

Worksheet time: 11hrs 30mins

Name
Class
Date
1.

For chemical reactions to take place, heat must be added or removed from a substance.

a)

TRUE

b)

FALSE

2.

The type of thermometer and temperature probe required for a specific measurement depends on factors such as the range of temperatures to be measured and accuracy required.

a)

TRUE

b)

FALES

3.

The Kelvin scale uses the same degree incrementation as the Fahrenheit scale.

a)

TRUE

b)

FALSE

4.

All substances do not have the same capacity for heat.

a)

TRUE

b)

FALSE

5.

To determine the quantity of sensible heat required to raise or lower the temperature of any substance, it is necessary to know the specific heat value, mass, and the number of degrees of temperature change.

a)

TRUE

b)

FALSE

6.

The second law of thermodynamics states that energy cannot be created or destroyed but can be changed from one form to another.

a)

TRUE

b)

FALSE

7.

Radiation does not require a medium between two objects for heat transfer to take place.

a)

TRUE

b)

FALSE

8.

In general, solids dissolved in a liquid lower the boiling point; gases dissolved in a liquid usually raise the boiling point.

a)

TRUE

b)

FALSE

9.

In most substances, thermal expansion happens as a substance is heated up to and above its boiling point.

a)

TRUE

b)

FALSE

10.

Saturated steam will be at the same temperature as the boiling temperature of water.

a)

TRUE

b)

FALSE

11.

At the saturated temperature, the fluid may exist as a liquid or a gas.

a)

TRUE

b)

FALSE

12.

Only steam that is not in contact with water can be superheated.

a)

TRUE

b)

FALSE

13.

A(n) ___ thermometer measures temperature by the expansion or contraction of the liquid in the stem.

a)

flexible capillary type dial

b)

liquid-in-glass

c)

infrared

d)

bimetal

14.

When using a ___ thermometer, temperature is measured by the movement in the bimetal strip or coil caused by a change in temperature.

a)

thermocouple

b)

thermistor

c)

bimetal

d)

flexible capillary type dial

15.

A(n) ___ thermometer operates on the principle that resistance to flow of electric current will increase as the temperature of the conducting wire increases.

a)

bimetal

b)

infrared

c)

thermocouple

d)

thermistor

16.

A(n) ___ is used for noncontact temperature measurement.

a)

thermistor

b)

infrared

c)

thermocouple

d)

bimetal

17.

The ___ temperature scale is based on a 180° degree separation between the melting and boiling points of water, with fixed points at 32° and 212°.

a)

Rankine

b)

Celsius

c)

Fahrenheit

d)

Kelvin

18.

The ___ temperature scale is based on a 100° degree separation between the freezing and boiling points of water, with fixed points at 0° and 100°.

a)

Fahrenheit

b)

Celsius

c)

Rankine

d)

Kelvin

19.

The formula for converting Celsius to Fahrenheit is Celsius = ___.

a)

(Fahrenheit Ã- 9/5) + 32

b)

(32 - Fahrenheit) + 5/9

c)

(9/5 Ã- 32) + Fahrenheit

d)

(Fahrenheit - 32) Ã- 5/9

20.

A ___ is used to measure the quantity of heat.

a)

slug

b)

joule (J)

c)

British thermal unit (BTU)

d)

calorie (cal)

21.

The rate at which material conducts heat is dependent upon the ___ of the material.

a)

specific heat

b)

thermal conductivity rating

c)

boiling point

d)

melting point

22.

In ___, the transfer of heat is a result of a difference in temperature between two objects or substances in direct physical contact.

a)

natural convection

b)

conduction

c)

radiation

d)

forced convection

23.

___ occurs because of a combination of heat transfer by conduction and heat transfer by actual movement of some of the fluid from one place to another.

a)

Radiation

b)

Latent heat

c)

Natural convection

d)

Forced convection

24.

___ uses fans and blowers to create air movement when systems require a relatively immediate heat transfer to take place.

a)

Conduction

b)

Radiation

c)

Natural convection

d)

Forced convection

25.

___ is when the substance continues to absorb or remove heat without a change in temperature until it has absorbed or removed enough heat to change state.

a)

Specific heat

b)

Intensity of heat

c)

Latent heat

d)

Sensible heat

26.

Upon absorbing a sufficient quantity of latent heat of fusion, the solid will reach its ___ point and change state to a liquid.

a)

boiling

b)

melting

c)

saturation

d)

evaporation

27.

An example of ___ is the formation of water on the outside of a glass of ice water in summer.

a)

saturation

b)

vaporization

c)

superheated steam

d)

condensation

28.

An example of ___ is when water, under pressure, is released from a steam boiler to atmosphere during boiler blow down operations.

a)

evaporation

b)

condensation

c)

flashing

d)

saturation

29.

The operation of a cooling tower is an example of ___.

a)

condensation

b)

flashing

c)

saturation

d)

evaporation

30.

Wet saturated steam contains a moisture content of more than ___.

a)

0.75%

b)

1%

c)

1.5%

d)

2%

31.

The ___ of steam is the amount of BTU required to raise the temperature of 1 lb of water from 32°F to the corresponding boiling point and to change this water to saturated steam.

a)

latent heat

b)

total heat

c)

sensible heat

d)

saturation temperature

32.

To calculate the values for a given weight of water or saturated steam, it is necessary to ___.

a)

multiply the saturated steam table value by the weight of the water

b)

add the saturated steam table value to the weight of the water

c)

divide the weight of the water by the saturated steam table value

d)

subtract the saturated steam table value from the weight of the water

33.

___ causes changes in temperature that can be measured.

a)

SENSIBLE HEAT

b)

TEMPERATURE

c)

SPECIFIC HEAT

d)

LATENT HEAT

34.

___ is an indirect measure of the velocity attained by the molecules in a substance.

a)

SPECIFIC HEAT

b)

THERMODYNAMICS

c)

SATURATION

d)

TEMPERATURE

35.

___ is the velocity attained by the molecules in a substance indirectly measured by temperature.

a)

BTU

b)

PRESSURE

c)

INTENSITY OF HEAT

d)

STEAM

36.

The ___ of a substance is a ratio of the heat capacity of the substance to the heat capacity of pure water.

a)

THERMODYNAMICS

b)

SENSIBLE HEAT

c)

SPECIFIC HEAT

d)

LATENT HEAT

37.

___ is the science of thermal energy (heat) and how it transforms to and from other forms of energy.

a)

SUPERHEAT

b)

EVAPORATION

c)

THERMODYNAMICS

38.

The ___ is the type of heat involved with changes between the liquid and gas/vapor state.

a)

LATENT HEAT OF VAPORIZATION

b)

SPICIFIC HEAT

c)

SATURATION

d)

SENSIBLE HEAT

39.

___ is a given phase containing the highest concentration of molecules of a certain substance that it can hold before it changes state.

a)

SUPERHEATED

b)

STEAM

c)

PRESSURE POINT

d)

SATURATION POINT

40.

___ is when a gas or vapor is heated to a temperature higher than its boiling point.

a)

SENSIBLE HEAT

b)

LATENT HEAT

c)

SUPERHEATED

d)

SUBCOOLED

41.

___ is the vapor that forms when water is heated to its boiling point at ( 1 atm) at 212°F.

a)

SUPERHEAT

b)

LATENT HEAT

c)

HEAT INTENSITY

d)

STEAM

42.

For any given substance, the temperature at which a change of state occurs will depend upon the ___ being exerted on the substance.

a)

INTENSITY OF HEAT

b)

SPECIFIC HEAT

c)

PRESSURE

d)

FLAME