Speech Science: Exam
1 (Ch. 1 & 2)
Sound occurs when a disturbance creates changes in ____ in a ____, ____, or ____. Correct Answer:
pressure, gas, liquid, solid
Scientific measurement systems are based on the modernized international metric system, the _____.
This is comprised of the ____ & ____ systems. Correct Answer: International System of units (SI)
The SI uses seven base units. What are they? Correct Answer: length
mass
time
electric current
thermodynamic temp
amount of substance
luminous intensity
The SI comprises what two related systems? Correct Answer: MKS and CGS
In the MKS system, m stands for ___, k stands for _____, and s stands for ____. Correct Answer: meters,
kilograms, seconds
In the CGS system, c stands for ____, g for _____, and s for ____. Correct Answer: centimeters, grams,
seconds
The ratio between the two systems (MKS and CGS) is usually _____ Correct Answer: some power of 10
Which system is usually preferred? Correct Answer: MKS
Fundamental property of an object that refers to the amount of matter in the object, and it is measured
in kilograms of grams Correct Answer: mass
___ is defined as any influence that causes an object to undergo a change in speed, a change in
direction, or a change in shape. Correct Answer: force
Force is measured in ____ in the MKS system and ____ in the CGS system. Correct Answer: newtons,
dynes
___ is defined as the force of gravity on an object and is related to its mass. Correct Answer: weight
,Weight is a force and is therefore measured by the ____. Correct Answer: newton
____ is defined as the quantity of three-dimensional space occupied by a liquid, solid, or gas. Correct
Answer: volume
the standard unit of volume in the metric system is the ____ Correct Answer: liter
____ is defined as mass of a substance, a material, or an object per unit of volume, or mass divided by
volume. Correct Answer: density
Density is measured in terms of: Correct Answer: grams per cm cubed
or
kilograms per meter cubed
or
grams per milliliter
____ is the distance traveled by an object in a given unit of time. Correct Answer: speed
speed is measured in ____ Correct Answer: meters/second
Velocity has the same numerical value as speed (m/s) but also specifies the ____ of the movement.
Correct Answer: direction
____ refers to the mass times velocity of an object during motion. Correct Answer: momentum
___ occurs when velocity changes as a function of time. Correct Answer: acceleration
____ is the resistance of any physical object to a change in its state of motion or rest. Correct Answer:
inertia
_____ is Newton's First Law of Motion which states that the velocity of a body remains constant unless
the body is acted on by an external force Correct Answer: inertia
____ is the property of a material that returns it to its original shape after it has been deformed by an
external force . The external force is called ___. Conversely ____ refers to a change in the shape or size
of an object due to an applied force. The relative amount of deformation undergone by the object is
called the ____. Correct Answer: elasticity, stress, deformation, strain
Elasticity is determined by the amount of force required to displace the object by some distance, and is
measured in terms of ____. Correct Answer: stiffness (K)
___ occurs when a force is exerted over a distance and is measured in newtons times distance in meters.
Correct Answer: work
____ is defined as the ability to do work Correct Answer: energy
forms of energy include: Correct Answer: chemical energy
electrical energy
, thermal energy (heat)
radiant energy (light)
mechanical energy (movement)
sound energy
nuclear energy
____ refers to the rate of work done or energy used in a period of time and is measured in watts Correct
Answer: power (work/time)
____ refers to power per unit of area and is measured in watts per square meter in the MKS system or
watts per square centimeter in the CGS system. Correct Answer: intensity
____ is defined as force acting perpendicularly on a specific surface area. The unit of measure in the
MKS system is the ___, which is equivalent to a force of 1 newton over 1 square meter. Correct Answer:
pressure; pascal (Pa)
Multiples of the pascal are commonly used, such as ____ or ____. In the CGS system, the unit of
measurement for pressure is ____, also called ____. Correct Answer: decapascal, kilopascal, dynes per
square centimeter, microbar
Microbar and pascal are related measures, such that 1 microbar equals ____, and 10 microbar equal
_____. Correct Answer: 0.1 Pa, 1 Pa
An older unit of measure of pressure is ____, which is still used in the United States. Correct Answer:
pounds per square inch (psi)
What is the notation for pressure? Correct Answer: P
What is the notation for atmospheric pressure? Correct Answer: P atmos (subscript)
Pressure that is higher/lower than P atmos is called ? Correct Answer: positive pressure (Ppos)
negative pressure (Pneg)
Pressure within the lungs?
within the trachea?
within the oral cavity? Correct Answer: Palveolar
Ptrach
Poral
Because air is a gas, it moves in predictable ways. Molecules of air have a natural tendency to spread
themselves around _____. Correct Answer: more or less equally
To achieve equalization, air always moves from an area of ____ pressure to an area of ____ pressure. It
is the difference in pressure called a _____, which causes air to flow and creates a driving pressure.
Correct Answer: high; lower; pressure differential
1 (Ch. 1 & 2)
Sound occurs when a disturbance creates changes in ____ in a ____, ____, or ____. Correct Answer:
pressure, gas, liquid, solid
Scientific measurement systems are based on the modernized international metric system, the _____.
This is comprised of the ____ & ____ systems. Correct Answer: International System of units (SI)
The SI uses seven base units. What are they? Correct Answer: length
mass
time
electric current
thermodynamic temp
amount of substance
luminous intensity
The SI comprises what two related systems? Correct Answer: MKS and CGS
In the MKS system, m stands for ___, k stands for _____, and s stands for ____. Correct Answer: meters,
kilograms, seconds
In the CGS system, c stands for ____, g for _____, and s for ____. Correct Answer: centimeters, grams,
seconds
The ratio between the two systems (MKS and CGS) is usually _____ Correct Answer: some power of 10
Which system is usually preferred? Correct Answer: MKS
Fundamental property of an object that refers to the amount of matter in the object, and it is measured
in kilograms of grams Correct Answer: mass
___ is defined as any influence that causes an object to undergo a change in speed, a change in
direction, or a change in shape. Correct Answer: force
Force is measured in ____ in the MKS system and ____ in the CGS system. Correct Answer: newtons,
dynes
___ is defined as the force of gravity on an object and is related to its mass. Correct Answer: weight
,Weight is a force and is therefore measured by the ____. Correct Answer: newton
____ is defined as the quantity of three-dimensional space occupied by a liquid, solid, or gas. Correct
Answer: volume
the standard unit of volume in the metric system is the ____ Correct Answer: liter
____ is defined as mass of a substance, a material, or an object per unit of volume, or mass divided by
volume. Correct Answer: density
Density is measured in terms of: Correct Answer: grams per cm cubed
or
kilograms per meter cubed
or
grams per milliliter
____ is the distance traveled by an object in a given unit of time. Correct Answer: speed
speed is measured in ____ Correct Answer: meters/second
Velocity has the same numerical value as speed (m/s) but also specifies the ____ of the movement.
Correct Answer: direction
____ refers to the mass times velocity of an object during motion. Correct Answer: momentum
___ occurs when velocity changes as a function of time. Correct Answer: acceleration
____ is the resistance of any physical object to a change in its state of motion or rest. Correct Answer:
inertia
_____ is Newton's First Law of Motion which states that the velocity of a body remains constant unless
the body is acted on by an external force Correct Answer: inertia
____ is the property of a material that returns it to its original shape after it has been deformed by an
external force . The external force is called ___. Conversely ____ refers to a change in the shape or size
of an object due to an applied force. The relative amount of deformation undergone by the object is
called the ____. Correct Answer: elasticity, stress, deformation, strain
Elasticity is determined by the amount of force required to displace the object by some distance, and is
measured in terms of ____. Correct Answer: stiffness (K)
___ occurs when a force is exerted over a distance and is measured in newtons times distance in meters.
Correct Answer: work
____ is defined as the ability to do work Correct Answer: energy
forms of energy include: Correct Answer: chemical energy
electrical energy
, thermal energy (heat)
radiant energy (light)
mechanical energy (movement)
sound energy
nuclear energy
____ refers to the rate of work done or energy used in a period of time and is measured in watts Correct
Answer: power (work/time)
____ refers to power per unit of area and is measured in watts per square meter in the MKS system or
watts per square centimeter in the CGS system. Correct Answer: intensity
____ is defined as force acting perpendicularly on a specific surface area. The unit of measure in the
MKS system is the ___, which is equivalent to a force of 1 newton over 1 square meter. Correct Answer:
pressure; pascal (Pa)
Multiples of the pascal are commonly used, such as ____ or ____. In the CGS system, the unit of
measurement for pressure is ____, also called ____. Correct Answer: decapascal, kilopascal, dynes per
square centimeter, microbar
Microbar and pascal are related measures, such that 1 microbar equals ____, and 10 microbar equal
_____. Correct Answer: 0.1 Pa, 1 Pa
An older unit of measure of pressure is ____, which is still used in the United States. Correct Answer:
pounds per square inch (psi)
What is the notation for pressure? Correct Answer: P
What is the notation for atmospheric pressure? Correct Answer: P atmos (subscript)
Pressure that is higher/lower than P atmos is called ? Correct Answer: positive pressure (Ppos)
negative pressure (Pneg)
Pressure within the lungs?
within the trachea?
within the oral cavity? Correct Answer: Palveolar
Ptrach
Poral
Because air is a gas, it moves in predictable ways. Molecules of air have a natural tendency to spread
themselves around _____. Correct Answer: more or less equally
To achieve equalization, air always moves from an area of ____ pressure to an area of ____ pressure. It
is the difference in pressure called a _____, which causes air to flow and creates a driving pressure.
Correct Answer: high; lower; pressure differential
