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Description
Flashcards by Calista Kusuma, updated more than 1 year ago
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Created by Calista Kusuma
over 9 years ago
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| Question | Answer |
| What waves do ultrasounds use? | Sound waves to view inside body. |
| Why can't we hear them? | Too high frequency (pitch) for human ear |
| Why ultrasounds for pregnant ladies? | Sound waves is not an EM wave |
| What idea do ultrasound scanners use? | Reflection- sound bounces bacj from surfaces |
| Do sound waves need material to travel? | Yes |
| How do humans detect sound? | Sense organs= ears. Sound is funnelled inside the ear, making the outer ear and sensitive ear drums vibrate. |
| What type of waves are sound waves? | Compression |
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