# 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10.

## Presentation on theme: "25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10."— Presentation transcript:

25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt. 25 pt. 5 pt. 10 pt. 15 pt. 20 pt.

1-5 What is a wave?

1-5A What is a wave? A wave is a disturbance that travels through matter or space and time.

1-10 How can you calculate the wavelength of a wave if you know the frequency and velocity?

1-10A How can you calculate the wavelength of a wave if you know the frequency and velocity? v = λf So: λ = v / f

1-15 If a wave has a period of 0.001s what is its frequency?

1-15A If a wave has a period of 0.001s what is its frequency? f = 1/T f = 1 / 0.001 s = 1,000 Hz

1-20 With a period of 0.02 s, and a velocity of 340m/s, what is the wavelength?

1-20A With a period of 0.02 s, and a velocity of 340m/s, what is the wavelength? v = λf v = λ/T 340 m/s = λ / 0.02 s λ = 340 m/s x 0.02 s λ = 6.8 m

1-25 If you have a wave with a wavelength of 10m, and a velocity of 200m/s, what is its period?

1-25A If you have a wave with a wavelength of 10m, and a velocity of 200m/s, what is its period? v = λf v/λ = f 200m/s / 10 m = 20 Hz f = 1/T T = 1/20Hz = 0.05 s

2-5 What is the approximate speed of sound?

2-5A What is the approximate speed of sound? 340 m/s

2-10 If a hummingbird flaps its wings 70 times / sec, what is the frequency of the sound?

2-10A If a hummingbird flaps its wings 70 times / sec, what is the frequency of the sound? 70 Hz

2-15 Two tones come from separate speakers. One has a frequency of 100Hz, the other is 103Hz. What is the frequency of the beat?

2-15A Two tones come from separate speakers. One has a frequency of 100Hz, the other is 103Hz. What is the frequency of the beat? 103Hz – 100Hz = 3 Hz

2-20 It is 40°C outside. What is the speed of sound?

2-20A It is 40°C outside. What is the speed of sound? 331 + 0.6 x 40 = 355m/s

2-25 Type question here. Adjust size & position as necessary.

2-25A It is 2°C outside. What is the wavelength of a 200Hz tone? v = 331 + 0.6 x 2 = 332.2 m/s v = f x λ 332.2 = 200Hz x λ λ = 1.66 m

3-5 Draw a standing wave

3-5A Draw a standing wave

3-10 What part of a standing wave does not move?

3-10A What part of a standing wave does not move? The Node

3-15 What part of a standing wave moves farthest from the center?

3-15A What part of a standing wave moves farthest from the center? The antinodes

3-20 If a standing wave has 4 antinodes, how many nodes does it have?

3-20A If a standing wave has 4 antinodes, how many nodes does it have? 5 nodes

3-25 If a string has a length of 1 m, and a standing wave with 3 nodes, what is the wavelength of the standing wave?

3-25A If a string has a length of 1 m, and a standing wave with 3 nodes, what is the wavelength of the standing wave? 1 m

4-5 What is the highest point of a wave?

4-5A What is the highest point of a wave? Crest

4-10 What is the lowest point of a wave?

4-10A What is the lowest point of a wave? Trough

4-15 The square of this will give you the intensity of sound.

4-15A The square of this will give you the intensity of sound. Amplitude

4-20 What is twice the distance from compression to rarefaction?

4-20A What is twice the distance from compression to rarefaction? Wavelength Compression Rarefaction λ

4-25 What travels in a wave?

4-25A What travels in a wave?

5-5 Name the TV show that has this theme song:

5-5A

5-10 Name this Instrument:

5-15 What is the name of the Minor League baseball team is based in Des Moines, Iowa?

5-15A What is the name of the Minor League baseball team is based in Des Moines, Iowa?

5-20 What was the name of Mr. Szarzak’s high school band?

5-20A What was the name of Mr. Szarzak’s high school band?

5-25 What is the best selling album of all time?

5-25A What is the best selling album of all time?

Daily Double It is 2°C outside. What is the wavelength of a 200Hz tone?

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