Vocabulary
The process of finding an object by using reflected sound.
Echolocation
How do sound waves move?
outward in all directions
Which of the following objects could be not used to send a message?
Telegraph, Sundial, or Flashlight
Sundial
What kind of sound has a short wavelength and high amplitude?
A loud high pitched sound
Name 2 animals that use echolocation
Bats, Dolphins, Whales
A wave that transfers energy through matter and spreads outward in all directions from a vibration.
Sound Wave
Which medium does sound travel through the fastest?
Solid
What language do computers use to send information?
Binary Code
True or False:
Sound can travel through space.
False
What 2 conditions do you need to hear an echo?
Hard and flat surfaces.
The distance from the top of one wave to the top of the next.
Wavelength
What is the amplitude?
The height of a sound wave.
What objects in space help to send, receive and amplify information?
Satellites
When does the pitch of an object sound the highest?
The closer you are to the object.
The use of ultrasound waves to produce images of the inside of the human body.
Ultrasound
The number of wavelengths that pass a reference point in a given amount of time.
Frequency
What do all sounds begin with?
vibration
How did people communicate before technology?
Mail or Signal Fires
Can sound change a medium?
No, sound moves through a medium, but the medium does not change.
This technology works by bouncing sound waves off an object and measuring the time echoes take to return.
Sonar
How high or low a sound is as determined by its frequency.
Pitch
What type of energy is sound energy?
Kinetic
What kind of technology is used between an airplane and the control tower?
Radio
What is a medium?
A material that sound moves through.
How are sonar and echolocation related?
Both give information about locations from sound waves.