Flashcards

Science- sound

lynngaffney Inglês 10 flashcards

Flashcards do conjunto (10)

1SOUNDProduced when objects vibrate
2SOUND IS AForm of energy
3EXAMPLES OF VIBRATIONS1.When you pluck a guitar string
2.When you put paint on a speaker the paint bounces up and down
3. When you put a ruler on the end of a table and move it you can hear the vibrations
4TO DEMONSTRATE THAT SOUND IS A FORM OF ENERGYSuspend a tennis ball by a string and play a speaker beside it the ball is seen to move away from the speaker.
5HOW SOUND TRAVELS-Emma's vocal chords will vibrate
-The air molecules in Emma's mouth will vibrate
-When Emma opens her mouth the vibration energy is passed onto the air molecules in the room.The air molecules in the room are vibrating.
-The air molecules in Naomi's ear canal will vibrate and knock against her ear drum.
-The energy falling on Naomi's eardrum allows her to hear Emma's voice.
6REFLECTION OF SOUNDAn echo is an example of sound reflection
7SPEED OF SOUND AND LIGHTYou see lightning before you hear thunder.
8DADS SILLY TRIANGLEDISTANCE
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SPEED X TIME
9DECIBELSSound is measured in decibels
The human ear cannot hear over 120 decibels
10WHAT DOES SOUND NEED TO TRAVEL?a medium

Descrição: FlashCards sobre Science- sound, criado por lynngaffney em 25-03-2015.
Criado por: lynngaffney
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