Wave Definitions
Wave Components
Pendulum
Calculations
Waves in Real Life
100
What is a wave?
A wave is a disturbance in a medium that carries energy without a movement of particles.
100
Name 3 Wave Components!
Amplitude, Crest, Trough, Wavelength, Speed, Period, and Frequency
100
What is a Pendulum?
A bob (a ball point mass) hanging from a massless. string at a fixed point.
100
The formula to calculate the speed of a wave?
Distance (meter) divided Time (seconds) (V = X/T)
or Wavelength times Frequency (V =
x
)
100
Analogy for waves going back to the ocean after a tsunami.
A whip.
200
Name three types of waves
Longitudinal wave, Transverse wave, Surface wave, Standing wave, Electromagnetic wave, and Mechanical wave.
200
What is the highest and lowest part of a wave?
Highest: Crest
Lowest: Trough
200
What factors can effect a pendulum's period?
Length of string and gravity.
200
A car covers a distance of 105 m in 15 seconds. Find the speed of the car.
105/5 = 7 m/s
200
What wave can be created by the vibration of guitar strings?
Transverse waves
300
What are simple harmonic motions?
A wave that moves in a repetitive back-and-forth motion. However, it can't be affected by the external nature.
300
What is a vibration in waves?
A repeated back-and-forth motion of a particle when displaced from its equilibrium position.
300
What is the popular Indonesian Traditional game that represents an oscillating pendulum?
Latto - latto
300
Calculate the speed of a wave that is traveling 9 meters in 45 seconds
9/45 = 1/9 m/s
300
What in nature has the higest wave speed and frequency in nature?
Gamma Rays
400
When can you see transverse waves from a group of people?
When people stand up or raise their hands one by one in sports game
400
What is a wavelength?
The wavelength is the distance between two consecutive waves corresponding points.
400
Which famous astronomer discovered "The Law of the Pendulum"?
Gelileo Galilei
400
What is the wavelength of a wave with the speed of 75 m/s and frequency of 15 Hz
5
75/15 = 5
400
What is a known example of surface waves in real life?
The ocean because they travel on the water's medium between the ocean and the air.
500
What type of wave does the speaker use?
Sound waves
500
Relation between frequency and wavelength
Longer Wavelength = Lower Frequency
Shorter Wavelength = Higher Frequency
500
What is the period of a pendulum in pluto that has a mass of 15kg, has a length of 6 m?
19.53
((2 x 3.14) √(6/0.62)
= 6.28 √9.68
= 6.28 x 3.11 = 19.53
500
What is the frequency of a wave if it has a speed of 8 m/s and a wavelength of 20.
0.4 Hz
F = 8/20 = 2/5 Hz
= 0.4 Hz
500
What type of wave does the earthquake follow?
Transverse waves