ECHO ARENA · ECHOLING
How Sound Travels
Vibration Bridge
Learn with Echoling, then use your clues in the adventure. Pause whenever you need time to read or think.
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Your Vibration Bridge adventure
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Echoling — How Sound Travels Vibration Bridge
Hi!
I'm Echoling.
Welcome to Vibration Bridge!
Will you help me investigate how sound travels?
The Grumblies have mixed up our clues.
Let's check the evidence!
Sound travels as vibrations through a medium such as air,
water or a solid.
It does not travel through empty space without a medium.
What does sound need to travel?
- A. Perfectly empty space
- B. Only a bright light
- C. A medium
The answer is C: A medium
Sound travels as vibrations through a medium such as air,
water or a solid.
It does not travel through empty space without a medium.
That clue helps us make sense of this place.
The material transfers the disturbance;
a piece of source material does not have to travel
all the way to the listener.
Can sound travel through water?
- A. Only if the water is solid
- B. Yes
- C. No
The answer is B: Yes
Sound travels as vibrations through a medium such as air,
water or a solid.
It does not travel through empty space without a medium.
Hmm...
how does that connect to our first clue?
Our paths show a vibrating source connected through air to a receiver,
and another path with an empty-space gap.
The first supports ordinary sound transmission;
the second does not.
Which path supports sound in our model?
- A. The continuous air path
- B. The empty-space gap
- C. Both transmit ordinary sound equally
The answer is A: The continuous air path
Our paths show a vibrating source connected through air to a receiver,
and another path with an empty-space gap.
The first supports ordinary sound transmission;
the second does not.
Nice investigating!
You've been following the evidence.
Let's bring our clues together before the adventure.
Sound travels as vibrations through a medium such as air,
water or a solid.
The material transfers the disturbance;
a piece of source material does not have to travel
all the way to the listener.
Our paths show a vibrating source connected through air to a receiver,
and another path with an empty-space gap.
You're ready to explore Vibration Bridge with me!
Choose TRAIN MORE if you'd like another look at the clues.
Choose START ADVENTURE when you're ready.
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