Question 1 The distance from equilibrium of a wave to the crest of the wave is called…

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Presentation transcript:

Question 1 The distance from equilibrium of a wave to the crest of the wave is called…

ANSWER Amplitude

Question 2 The power of sound per area of sound is called…

ANSWER Intensity

Question 3 What are the units for sound Intensity?

ANSWER Watts per square meter

Question 4 The mathematical name for the shape of a wave is called a __________ wave.

ANSWER sine

Since sound cannot travel in a vacuum it is called a(n)… Question 5 Since sound cannot travel in a vacuum it is called a(n)…

ANSWER Mechanical wave

What are the metric units used to measure frequency? Question 6 What are the metric units used to measure frequency?

ANSWER Hertz

The faster the sound moves through the air, … Question 7 The faster the sound moves through the air, … The colder the air must be. The warmer the air must be. The dryer the air must be. The higher frequency sound it must be.

B) The warmer the air must be ANSWER B) The warmer the air must be

Question 8 What is the range of human hearing? 5 Hz-5,000 Hz

ANSWER C) 20 Hz - 20,000 Hz

Question 9 What is the type of wave that vibrates perpendicular to its direction of travel? Hint: light, x-rays, radio waves fall into this category

ANSWER Transverse waves

Question 10 What is the other name for a longitudinal wave?

ANSWER Compression wave

In a longitudinal wave the area between compressions is called… Question 11 In a longitudinal wave the area between compressions is called…

ANSWER rarefaction

What is the symbol used for sound intensity level? Question 12 What is the symbol used for sound intensity level?

ANSWER ß

Which two factors affect the speed of sound? Question 13 Which two factors affect the speed of sound? frequency and period amplitude and wavelength air temperature and humidity wavelength and elasticity

C) Air temperature and humidity ANSWER C) Air temperature and humidity

The pitch of a sound depends on which of these? Question 14 The pitch of a sound depends on which of these? wavelength amplitude intensity loudness frequency

ANSWER E) frequency

Question 15 Periodic motion of an object that results from a restoring force that is proportional to displacement is called…

Simple Harmonic Motion ANSWER Simple Harmonic Motion

Question 17 When sound waves bend due to a difference in air temperature it is called… reflection reverberation echoing refraction

ANSWER D) refraction

Question 18 Sound waves that are beyond the frequency range of human hearing are called _____________.

ANSWER Ultrasonic

Question 19 If an object oscillates 20 complete cycles in 5 seconds, what is its period?

ANSWER 0.25 seconds

Sound intensity level (loudness) is measured in units called... Question 20 Sound intensity level (loudness) is measured in units called...

ANSWER Decibels

Question 21 The special frequency an object has that depends on its elasticity and shape is referred to as...

ANSWER Natural Frequency

Question 22 When an object receives a sympathetic vibration from an outside source that matches its natural frequency and the object vibrates with a large amplitude _____________ is occurring.

ANSWER Resonance

Question 23 If the frequency of a light wave is 6.5 x 108 MHz, and its speed is 300,000,000 m/s. What is its wavelength?

ANSWER 4.61x 10-7 meters

Question 24 When two waves occupy the same space at the same time they __________ with one another.

ANSWER Interfere

Question 25 When two wave interfere that are in phase and the resulting wave that gets created has a larger amplitude __________ interfence has occured.

ANSWER Constructive

Question 26 The rhythmic pattern generated by the interference of two waves at a similar frequency is called…

ANSWER Beats

Question 27 This is the term for the apparent change in frequency due the motion of the source or observer.

ANSWER Doppler Effect

Question 28 One vacuum cleaner makes a sound of 93 decibels. How many decibels do four vacuum cleaners make?

Question 31 A rocket engine emits 2.0 x105 Joules of sound energy per second. The sound is emitted in all directions. What is the sound intensity level, measured relative to the threshold of hearing, at a distance of 85 m away?