Wave Basics
What does a wave transfer?
What is Energy?
What is the formula for wave speed?
What is Speed = wavelength × frequency?
Higher amplitude means ______ energy.
What is more?
Digital signals are made of what two values?
What is 1s and 0s?
What wave type carries information in radios?
What is Radio waves (electromagnetic)?
The height of a wave from rest to crest is called what?
What is Amplitude?
A wave has a wavelength of 4 m and a frequency of 2 Hz. What is its speed?
What is 8 m/s?
If a wave has a small amplitude, does it have low energy or high energy?
What is low energy?
What type of signal varies smoothly and continuously?
What is analog?
Which communication technology uses light waves to send internet data extremely fast?
Fiber optic cables.
What is the distance between two crests called?
What is Wavelength?
If the wavelength doubles but frequency stays the same, what happens to speed?
What is speed doubles?
What happens to the frequency of a wave when the wavelength increases?
What is decreases?
Give one example of an analog communication technology.
What is vinyl records, cassette tapes, analog radios, landline phones?
Name one communication technology that relies on satellites.
What is GPS, satellite TV, satellite phones, or weather satellites?
What is the number of waves that pass a point in one second?
What is Frequency?
A wave has a speed of 24 m/s and a frequency of 6 Hz. What is its wavelength?
What is 4 meters?
Two waves hit the shore. Wave A hits 10 times per minute; Wave B hits 20 times per minute.
Which wave transfers more energy?
What is Wave B, because energy increases with frequency.
Give one example of a modern technology that uses digital signals to communicate.
What is cell phones, Wi-Fi, Bluetooth, streaming video, digital cameras, fiber optic internet?
Name the communication technology that uses high-frequency sound waves to send information underwater.
What is SONAR?
What is the type of wave where the displacement of the particle is perpendicular to the direction of the wave's movement?
What is a transverse wave?
Two waves travel through the same medium.
Wave A has a wavelength of 3 meters and a frequency of 5 Hz.
Wave B has a wavelength of 2 meters.
Both waves travel at 15 m/s.
What is the frequency of Wave B?
What is 7.5 hz?
Explain how amplitude affects the loudness of a sound wave.
What is Larger amplitude = louder sound (more energy).
Why do digital signals stay clear over long distances while analog signals often pick up noise?
Because digital signals use clear “on/off” patterns that can be restored, while analog signals change continuously and distort more easily.
Explain how digitizing scientific data helps scientists.
What is it makes data more accurate, easier to store, send, and analyze?