Hearing, Echoes & Reflections

ECHO ARENA · ECHOLING

Hearing, Echoes & Reflections

Drumquake Cavern

Learn with Echoling, then use your clues in the adventure. Pause whenever you need time to read or think.

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Train more: lesson transcript and free resources

Echoling — Hearing, Echoes & Reflections Drumquake Cavern

Hi!

I'm Echoling.

Welcome to Drumquake Cavern!

Will you help me investigate hearing, echoes & reflections?

The Grumblies have mixed up our clues.

Let's check the evidence!

Sound can reflect from surfaces.

An echo is a reflected sound arriving separately enough to

be recognized after the original.

What causes an echo?

  • A. Light turning into a new source
  • B. Gravity changing direction
  • C. Reflected sound

The answer is C: Reflected sound

Sound can reflect from surfaces.

An echo is a reflected sound arriving separately enough to

be recognized after the original.

That clue helps us make sense of this place.

Materials absorb or reflect sound differently.

Soft absorbent coverings can reduce some reflections compared with hard

bare surfaces under comparable conditions.

Which treatment reduces reflections in the record?

  • A. Adding more hard bare walls
  • B. Absorbent panels
  • C. Hard bare surfaces

The answer is B: Absorbent panels

Materials absorb or reflect sound differently.

Soft absorbent coverings can reduce some reflections compared with hard

bare surfaces under comparable conditions.

Hmm...

how does that connect to our first clue?

Our supplied room test records fewer strong reflections with absorbent panels.

Follow the provided quiet listening guidance;

no loud demonstration is needed to use the data.

What path fits an echo?

  • A. Source to surface to receiver
  • B. Source directly disappears
  • C. Source to vacuum to receiver

The answer is A: Source to surface to receiver

Sound can reflect from surfaces.

An echo is a reflected sound arriving separately enough to

be recognized after the original.

Nice investigating!

You've been following the evidence.

Let's bring our clues together before the adventure.

Sound can reflect from surfaces.

Materials absorb or reflect sound differently.

Our supplied room test records fewer strong reflections with absorbent panels.

You're ready to explore Drumquake Cavern with me!

Choose TRAIN MORE if you'd like another look at the clues.

Choose START ADVENTURE when you're ready.

I'll be right here!

Or choose BACK TO MAP.

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Free Hearing, Echoes & Reflections teacher guide and practice (PDF)

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