What can a sound tell you about the object that made it?
What is objects can be identified by their properties, including the sounds they make.
100
What happens to the vibrations when pitch changes?
What is fast vibrations make high pitched sounds and slow vibrations make low pitched sounds.
100
Sounds can travel through water, solids and gas. Sounds are loudest and clearest when they travel through what?
What is water.
100
A fast back and forth movement is called what?
What is vibration.
100
Being able to tell different sounds apart is called what?
What is sound discrimination.
200
What are some properties of sound?
What is loud, soft, high, low, scratchy and ringing.
200
What happens to pitch and the vibrations when the length of the sound source changes?
What is a long object has a low pitch and vibrated slowly. A short object has a high pitch and vibrates quickly.
200
Sound can be made louder with listening tubes and megaphones, which gather and direct sound at either the source or the receiver. What is another word for sounds being made louder?
What is amplify.
200
When you make sounds by plucking a rubber band, you make the rubber band, you make the rubber band move back and forth very quickly what is this movement called?
What is vibration.
200
How fast or slow a vibration moves is called what?
What is frequency.
300
What are some examples of sound sources?
What is things that are vibrating and making sound, like a whistle or a bark or a voice.
300
How can you change the tension of strings?
What is pull it tighter.
300
What are the outer ears made for?
What is to receive.
300
A student holds two vibrating objects. Object A is vibrating faster than object B. Which object is louder? How do you know?
What is object A is louder than object B because it is vibrating fast.
300
The force applied to an object trying to pull it apart is called what?
What is tension.
400
What are examples of sound receivers?
What is anything that detects vibrations, like an ear, a telephone receiver, or a microphone.
400
Name an instrument we used that made vibrations.
What is kalimba, xylophone or string beam.
400
Does sound travel through solid materials? If so which ones?
What is yes, through solids like wood and string.
400
The highness or lowness of a sound is what?
What is pitch.
400
THe loudness of a sound is what?
What is volume.
500
What happens to the vibrations when the volume changes?
What is stronger, more intense vibrations produce sounds with louder volume.
500
What must sound have to be heard?
What is a sound must have a source, a receiver and a solid, liquid or gas medium to travel through.
500
If you tie a string around a doorknob, pull a string slowly and keep plucking it with your finger as you pull, what happens to the pitch?
What is as you tighten the string the pitch gets higher.
500
The process of increasing the loudness of a sound is called what?