A
What is a waveform?
A curved line that shows the pattern of a wave.
What is a pixel?
Small dots that create an image.
What is Binary Code?
A code that uses a pattern of numbers (1's &0's).
What does vibrate mean?
To move back and forth quickly.
What is material?
The stuff that makes up everything.
How can Waves cause objects to move?
A) Changing objects color.
B) Making the objects disappear.
C) Transferring energy to the objects.
D) Heating up the objects.
C) Transferring energy to the object.
Which pattern can be used to transfer information using light?
A) Sound waves
B) Morse Code
C) Heat from the Sun
D) Electric Current
B) Morse code
What can waves cause objects to do?
A) Change color
B) Float
C) Move
C) Move
How can light be used to transfer information?
A) Make shadows bigger.
B) Helping plants grow.
C) Using Morse code.
D) Heating water.
C) Using Morse code.
What best describes a wave with a large amplitude?
A) Tall
B) Short
C) Slowly
D) Quickly
A) Tall
Which of the following is an example of energy being transferred by sound?
A) Lamp lighting up a room.
B) Fan blowing air.
C) Bell ringing.
Explain how echolocation works for bats.
The sound wave is set out and bounces off an insect and back to the bat.
What is echolocation?
Sound waves bouncing off objects.
What is the height of a wave called?
Amplitude
What is the width of a wave?
Wavelength
What does encode mean?
To convert into a code.
What happened when we put sand on a Sound plate and turned it on?
The sand vibrated, making patterns.
What does decode mean?
Convert a coded message into real language.
What can sound travel through?
(Hint: 3 properties of matter)
Air, Water, and Solids.
What property of matter is the easiest for sound to travel through?
Hardest?
Easiest: Solids>Particles are closer together making it easier for them to transfer the energy.
Hardest: Air> Particles are far apart, taking longer for them to transfer energy.
If I was stranded on an island and wanted to use smoke signal, name one constraint/limitation I may run into.
Clouds, rain, fog, lack of materials, etc.
What happens if the amplitude of a sound increases?
The sound would get louder.
What do all of the signal patterns have in common?
(ie: morse code, Binary Code, semaphore, talking drums, sign language, etc.)
They can be shared across long distances.
Why should an engineer test their model?
To make sure it meets the criteria and make sure it functions correctly.
What happens when a wavelength gets wider?
The pitch gets deeper/lower.