Book 3 Unit 3

Question 1

Mass can be defined as:
A) A push or pull exerted on an object
B) The amount of substance of something
C) Force per unit area
D) Capacity of a body or substance to perform work
E) The rate of change of position

Answer 1

B) The amount of substance of something

Question 2

Work is defined as:
A) The product of the force applied and the distance moved
B) The ability of a body to do work due to its motion
C) The rate of doing work
D) Capacity of a body or substance to perform work
E) Ability of a body to do work by virtue of its position

Answer 2

A) The product of the force applied and the distance moved

Question 3

Pressure can be defined as:
A) Capacity of a body or substance to perform work
B) The amount of substance of something
C) Force per unit area
D) A push or pull exerted on an object
E) The rate of change of position

Answer 3

C) Force per unit area

Question 4

The unit of power in the SI system is the:
A) Watt (W)
B) Joule (J)
C) Newton (N)
D) Newton metre (Nm)
E) Pascal (P)

Answer 4

A) Watt (W)

Question 5

Ice, once formed:
A) Contracts as it loses temperature
B) Cannot loose any more heat
C) Cannot gain any more heat
D) Expands as it gains temperature
E) Expands as it loses temperature

Answer 5

E) Expands as it loses temperature

Question 6

All substances - whether solid, liquid, or gas - as heat is added or absorbed will:
A) Expand
B) Change state
C) Drop in temperature
D) Contract
E) Loose thermal energy

Answer 6

A) Expand

Question 7

The unit of pressure in the SI system is the:
A) Watt (W)
B) Newton (N)
C) Metre per second (m/s)
D) Kilogram (kg)
E) Pascal (P)

Answer 7

E) Pascal (P)

Question 8

The term used to describe the fluid-to-solid change of state during the extraction of heat is:
A) Latent heat of solidification
B) Latent heat of evaporation
C) Latent heat of fusion
D) Latent heat of plasma
E) Latent heat of condensation

Answer 8

A) Latent heat of solidification

Question 9

The Celsius scale considers the boiling point of water to be:
A) 200º
B) 100º
C) 212º
D) 32º
E) 0º

Answer 9

B) 100º

Question 10

Temperature may be considered a measurement of:
A) Heat
B) Speed
C) Weight
D) Mass
E) Density

Answer 10

B) Speed

Question 11

The unit of velocity in the SI system is the:
A) Watt (W)
B) Newton (N)
C) Kilogram (kg)
D) Joule (J)
E) Metre per second (m/s)

Answer 11

E) Metre per second (m/s)

Question 12

The heat that is added to or removed from a substance and causes the substances temperature to change is called:
A) Entropy
B) Sensible heat
C) Super temperature
D) Enthalpy
E) Latent heat

Answer 12

B) Sensible heat

Question 13

The equation for the Ideal Mechanical Advantage (IMA) is:
A) Load actual / Load given
B) Effort actual / Load actual
C) Load given / Effort given
D) Load actual / Effort actual
E) Effort given / Load given

Answer 13

C) Load given / Effort given

Question 14

If more heat is continuously added to steam at 100ºC the temperature will increase producing __________ steam.
A) Superheated
B) Enthalpy
C) Hot
D) Entropy
E) Over heated

Answer 14

A) Superheated

Question 15

Kinetic energy (KE) is:
A) The rate of doing work
B) Ability of a body to do work by virtue of its position
C) Capacity of a body or substance to perform work
D) The ability of a body to do work due to its motion
E) The product of the force applied and the distance moved

Answer 15

D) The ability of a body to do work due to its motion

Question 16

The term used to describe the fluid-to-gas change of state during the addition of heat is:
A) Latent heat of evaporation
B) Latent heat of plasma
C) Latent heat of condensation
D) Latent heat of fusion
E) Latent heat of solidification

Answer 16

A) Latent heat of evaporation

Question 17

A Class ________ lever has the fulcrum between the effort and the load.
A) III
B) V
C) I
D) IV
E) II

Answer 17

C) I

Question 18

The unit of energy in the SI system is the:
A) Kilogram (kg)
B) Joule (J)
C) Newton (N)
D) Pascal (P)
E) Newton metre (Nm)

Answer 18

C) Joule

Question 19

The unit of mass in the SI system is the:
A) Metre per second (m/s)
B) Watt (W)
C) Kilogram (kg)
D) Joule (J)
E) Newton (N)

Answer 19

C) Kilogram (kg)

Question 20

The unit of heat in the SI system is the:
A) Newton (N)
B) Watt (W)
C) Horse power (hp)
D) Joule (J)
E) Volt (V)

Answer 20

D) Joule (J)