unit 9 review\n1. if the distance represented...
unit 9 review\n1. if the distance represented by the letter a were increased, how would it change the way the sound was heard?\n2. if distance c on the diagram increased, what would happen to the pitch?\n3. high frequency sounds have higher______pitch.\n4. when comparing the two waves that are shown, how would wave a (green wave) differ than wave b (black wave)?\n5. a loud, high - pitched sound would have which of the following properties?\na. short wavelength, low amplitude\nb. long wavelength, low amplitude\nc. short wavelength, high amplitude\nd. long wavelength, high amplitude\n6. if you go up an octave from 460 hertz then what is the measurement of the higher octave?\n7. what is the difference between a 1 - point and 2 - point perspective?\nidentify each perspective.
Answer
### 1.
# Explanation:
## Step1: Recall sound - amplitude relationship
The distance A represents the amplitude of the sound wave. Amplitude is related to the loudness of the sound.
## Step2: Determine the effect
Increasing the amplitude makes the sound louder.
# Answer:
The sound would be louder.
### 2.
# Explanation:
## Step1: Identify distance C
Distance C represents the wavelength of the sound wave.
## Step2: Recall wavelength - pitch relationship
The pitch of a sound is related to its frequency, and frequency and wavelength are inversely - related ($v = f\lambda$, where $v$ is the speed of sound). Increasing the wavelength decreases the frequency.
## Step3: Determine the effect on pitch
Decreasing the frequency lowers the pitch.
# Answer:
The pitch would decrease.
### 3.
# Answer:
Higher
### 4.
# Explanation:
## Step1: Observe the waves
Wave A has a shorter wavelength and higher frequency compared to Wave B.
# Answer:
Wave A has a shorter wavelength and higher frequency.
### 5.
# Explanation:
## Step1: Recall sound properties
A high - pitched sound has a high frequency, which corresponds to a short wavelength. A loud sound has a high amplitude.
# Answer:
c. short wavelength, high amplitude
### 6.
# Explanation:
## Step1: Recall octave concept
Going up an octave means doubling the frequency.
## Step2: Calculate
If the initial frequency is 460 Hz, doubling it gives $460\times2=920$ Hz.
# Answer:
920 Hz
### 7.
# Brief Explanations:
One - point perspective has one vanishing point on the horizon line, and objects are drawn to converge towards that single point. Two - point perspective has two vanishing points on the horizon line, and objects are drawn to converge towards these two points, allowing for more complex and realistic depictions of three - dimensional objects. The first image (a building) likely uses two - point perspective as two sets of parallel lines converge to two different vanishing points. The second image (a street with buildings on both sides) also likely uses two - point perspective as there are two sets of parallel lines (along the length of the street and the sides of the buildings) converging to two vanishing points.
# Answer:
One - point perspective has one vanishing point; two - point perspective has two vanishing points. First image: two - point perspective. Second image: two - point perspective.