# Physical Science-Practice Test For Chapter 13

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• 1.

### A wave is a back and motion that transmits________

Explanation
A wave is a back and forth motion that transmits energy. Waves transfer energy from one place to another without transferring matter. This can be seen in various examples, such as sound waves, light waves, and water waves. In each case, the wave carries energy from its source to its destination, allowing for the transmission of information or the occurrence of various phenomena.

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• 2.

### What is the name of the substance that the energy of wave travels through

• A.

Conductor

• B.

Medium

• C.

Anode

• D.

Insulator

B. Medium
Explanation
The correct answer is medium. In the context of waves, a medium refers to a substance or material through which the energy of the wave can travel. It can be a solid, liquid, or gas. Conductors and insulators are terms commonly used in the context of electricity, while anode is a term used in the context of an electrochemical cell. Therefore, none of these options accurately describe the substance through which the energy of a wave travels.

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• 3.

### The name of the back and forth motion of waves

• A.

Rolling

• B.

Charging

• C.

Ocilation

• D.

Induction

C. Ocilation
Explanation
The correct answer is "ocilation" because it accurately describes the back and forth motion of waves. Oscillation refers to the repetitive movement or fluctuation of a wave, where it alternates between two opposing states or positions. This term is commonly used in physics to describe the behavior of waves, such as sound waves or electromagnetic waves.

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• 4.

### The types of waves

• A.

Transverse

• B.

Vertical

• C.

Horizontal

• D.

Longitudinal

A. Transverse
D. Longitudinal
Explanation
The correct answer is "transverse, longitudinal." Transverse waves are characterized by the particles of the medium oscillating perpendicular to the direction of wave propagation. Longitudinal waves, on the other hand, have particles oscillating parallel to the direction of wave propagation. These two types of waves are the most common and fundamental types of waves found in nature.

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• 5.

### A wave can be described by

• A.

Wavelength

• B.

Color

• C.

Amplitude

• D.

Frequency

• E.

Speed

• F.

Temperature

A. Wavelength
C. Amplitude
D. Frequency
E. Speed
Explanation
A wave can be described by its wavelength, which is the distance between two consecutive points of the wave that are in phase. Amplitude refers to the maximum displacement of a wave from its equilibrium position. Frequency is the number of complete cycles of a wave that occur in one second. Speed represents how fast a wave propagates through a medium. These parameters collectively define the characteristics and behavior of a wave. Temperature and color are not directly related to the description of a wave.

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• 6.

### _____________is the distance between two crests

wavelength
Explanation
The given correct answer for this question is "wavelength". Wavelength refers to the distance between two crests in a wave. It is a measurement of the length of one complete wave cycle, and it is commonly used to describe the characteristics of various types of waves, such as electromagnetic waves or sound waves.

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• 7.

### __________ is a waves height

amplitude
Explanation
Amplitude refers to the maximum displacement or distance of a wave from its equilibrium position. In the context of wave height, amplitude represents the maximum height or peak of a wave above its average level. It is a measure of the energy or intensity of the wave. The larger the amplitude, the more energy the wave carries. Therefore, amplitude is a suitable term to describe the height of a wave.

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• 8.

### The number of complete waves that pass a certain point in a second

frequency
Explanation
Frequency refers to the number of complete waves that pass a certain point in a second. It is a measure of how often a wave oscillates or repeats itself within a given time period. In other words, frequency determines the rate at which a wave or vibration occurs. It is typically measured in hertz (Hz) and is an important concept in various fields such as physics, engineering, and telecommunications.

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• 9.

### The rate at which at wave travels through a medium

speed
Explanation
The term "speed" refers to the rate at which a wave travels through a medium. It represents how quickly the wave propagates through the given medium, indicating the distance covered by the wave in a specific amount of time. The speed of a wave can be influenced by various factors, including the properties of the medium through which it travels.

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• 10.

### In 1960 Robert Boyle proved that sound cannot travel through a________

• A.

Water

• B.

A vacuum

• C.

Glass

• D.

Earth

B. A vacuum
Explanation
In 1960, Robert Boyle conducted experiments that demonstrated that sound cannot travel through a vacuum. A vacuum is an area devoid of any matter, including air molecules, which are necessary for sound waves to propagate. Without any medium to transmit the vibrations, sound waves cannot travel through a vacuum. This discovery had significant implications in the understanding of sound propagation and led to advancements in fields such as acoustics and physics.

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• 11.

### The intensity of sound waves is the_______of the wave

amplitude
Explanation
The intensity of sound waves refers to the amount of energy carried by the waves. It is directly related to the amplitude of the wave. Amplitude represents the maximum displacement of particles in the medium from their equilibrium position. Therefore, as the amplitude of the sound wave increases, the intensity also increases, indicating a greater amount of energy being transmitted.

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• 12.

### The more intense the sound wave the_______we think it is

louder
Explanation
The intensity of a sound wave is directly related to how loud we perceive it to be. When a sound wave is more intense, it means it carries more energy and causes a greater disturbance in the air molecules. This increased disturbance is interpreted by our ears as a louder sound. Therefore, as the intensity of a sound wave increases, we perceive it to be louder.

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• 13.

### A unit of sound

• A.

Inch

• B.

Pound

• C.

Decibel

• D.

Gallon

C. Decibel
Explanation
The given words "inch," "pound," and "gallon" are units of measurement for length, weight, and volume respectively. However, "decibel" is a unit of measurement for sound intensity. It is used to quantify the level of sound or noise. Therefore, "decibel" is the correct answer as it is the only unit of sound among the given options.

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• 14.

### Audible sound is from________

• A.

5Hz-10Hz

• B.

10,000Hz-100,000Hz

• C.

16Hz-25,000Hz

• D.

16Hz-20,000Hz

D. 16Hz-20,000Hz
Explanation
Audible sound refers to the range of frequencies that can be detected by the human ear. The frequency range of 16Hz-20,000Hz encompasses the typical range of human hearing, with 16Hz being the lowest frequency that can be perceived and 20,000Hz being the highest. Therefore, this range includes all the frequencies at which sound can be heard by humans, making it the correct answer.

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• 15.

### The speed of sound

• A.

340m/s

• B.

500m/s

• C.

1020m/s

• D.

270m/s

A. 340m/s
Explanation
The speed of sound refers to the rate at which sound waves travel through a medium. In this case, the correct answer is 340m/s, which is the commonly accepted speed of sound in dry air at 20 degrees Celsius. This value is based on various factors such as temperature, humidity, and altitude. It is important to note that the speed of sound can vary in different mediums, such as water or solids.

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• 16.

### Sound waves always bend_______the medium that slows them down

• A.

Towards

• B.

Away

A. Towards
Explanation
Sound waves always bend towards the medium that slows them down because when sound waves encounter a change in the density or temperature of the medium, their speed changes. This change in speed causes the sound waves to change direction, bending towards the medium that is causing the slowing down. This phenomenon is known as refraction and is observed when sound waves pass through different mediums such as air, water, or solids.

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