Data Sheet

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282. Flies and Sound
Replace the switch (62) with the reed switch (83) in project #272.
Hold the magnet (7) near the reed switch (83) and you will hear some
medium volume sounds of a police siren from the speaker (93). Also,
you will see the lamp (76) is ashing at the same time. Did you know
that ies cannot hear sound? So don’t worry about being quiet when you
are trying to catch that y!
283. Dolphins Hearing Underwater
Connect points C and D with a 4-wire (4) in project #282. Hold the
magnet (7) near the reed switch (83) and you will hear gun shots in
medium volume and the lamp (76) with ash at the same time. Did you
know that dolphins can hear sounds under water that are up to 15
miles away? It must be pretty noisy for them under the sea!
284. Whale Voices
Connect points A and B with a 4-wire (4) in project #282. Hold the
magnet (7) near the reed switch (83) and you will hear a re siren in
medium volume and the lamp (76) will ash. Did you know that whale
voices can travel over 400 miles underwater? They better be careful
what they say!
285. Sound in a Vacuum
Connect points E and F with a 4-wire (4) in project #282. Hold the
magnet (7) near the reed switch (83) and the sounds of space battle
will turn on in medium volume with the lamp (76) ashing with each
sound. Sound cannot travel in a vacuum because there are no atoms of
molecules to vibrate in a vacuum.
286. Is That My Voice?
Connect points G and H with a 4-wire (4) in project #282. Hold the
magnet (7) near the reed switch (83) and you will hear music in medium
volume and the lamp (76) will ash to the music. Have you ever listened
to a recording of your voice? It’s not what you think you sound like. This
is because our skull changes the resonance of our voice that makes it
sound like we have more bass or low frequency in our voice. You may
not like the way your voice sounds on a recording, but it’s exactly the
way it sounds to other people!
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