Curriculum Science Unit Sol 5.2 Powerpoint
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Transcript of Curriculum Science Unit Sol 5.2 Powerpoint
INVESTIGATING SOUND
Sound
Wave
Form of energy that travels through matter as waves
Disturbance that transfers energy from point to point
FrequencyThe number of waves produced in a unit of time
PitchThe highness or lowness of a sound
AmplitudeMeasure of the amount of energy in a sound wave
VIBRATIONThe back & forth movement of matter where
energy is transferred
VACUUM (SPACE)
NO MATTER
SOUND CANNOT TRAVEL
SOLIDMOLECULES OF MATTER
CLOSER TOGETHER
Transmit
SoundFastest
GASESMOLECULESOF MATTERFARTHER
APART
Transmit
SoundSlowest
SOFTOBJECT
MOST OF SOUND
ABSORBED
FREQUENCY PITCH
FREQUENCY PITCH
AMPLITUDE LOUDERSOUND
AMPLITUDE SOFTERSOUND
STRAW ACTIVITY
•Place pointed end in mouth past cut portion•Blow air through straw•Trim straw to make it shorter•What happened to the pitch?
SOUNDSTATIONSACTIVITY
How do we hear sound?
Why do humans & animalshear & make noise differently?
•Animal brains are not as complex as those of humans
•Some species do not have vocal cords.
•The vocal tracts of animals may differ in shape and size, so vocalizations sound different
SONAR•SOUND NAVIGATION
•USES SOUND WAVES TO DETECT OBJECTS FAR AWAY
ECHOLOCATION•FORM OF SONAR
•USED BY MARINE MAMMALS TO OBTAIN INFORMATION ABOUT SURROUNDINGS AND TO FIND FOOD
MUSICAL INSTRUMENTS
StringInstruments
Produce sound by vibrating strings
WoodwindInstrumen
ts
A vibrating reed helps to make the sound
MUSICAL INSTRUMENTS
BrassInstruments
Vibrating air makes the sound
Percussion
Instruments
Produce sound by being hit or shaken
MUSICAL INSTRUMENTS
Piano and Other
Instruments
Strings of different
lengths hit by small
hammers to produce sound
Voice
Vibration of vocal chords makes sound
MAKE YOUR OWNMUSICAL INSTRUMENT