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Physics of Sound

Physics of Sound. Investigation 1: Dropping In Day 1. Objectives. I can use adjectives to describe properties of sounds. I can identify objects by the sounds they make. I can discriminate sounds by their characteristics . I can complete analogies using vocabulary words. Listen.

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Physics of Sound

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  1. Physics of Sound Investigation 1: Dropping In Day 1

  2. Objectives • I can use adjectives to describe properties of sounds. • I can identify objects by the sounds they make. • I can discriminate sounds by their characteristics. • I can complete analogies using vocabulary words.

  3. Listen • Close your eyes and listen carefully. • (teacher drops object) • What object made the sound? How do you know?

  4. Sound is a Property • Objects have many properties or characteristics. • One property is the sound it makes when it hits a surface. • What other objects make a distinctive (unique) sound when it hits a hard surface? • This property is not the same as the property you own!

  5. Drop chamber • You will be investigating the sounds that objects make when they are dropped onto the desk surface. You will be dropping them in a chamber (container) so they don’t bounce all over. • Assemble the drop chamber: • Make the rectangle into a cylinder using fasteners. • Slide the vision barrier on top of the chamber. • Put the chamber on a stable desk. Two students will be on each side of the chamber. • WAIT!

  6. DROP CHAMBER • Split your group into two teams. • The GETTER will get • One drop chamber • One vision barrier • Three fasteners • Go! Assemble your drop chambers.

  7. Objects and sounds • All-quiet signal • Your first challenge is to become familiar with the sounds made by each of the objects in the set. • How to drop: • Remove the objects from their bag. • Drop one object into the drop chamber and listen. • Retrieve the object and put it back in the bag. • GETTERS get two bags of drop objects. • You have 3-4 minutes to explore the sound made by each object when it drops.

  8. Drop Challenge • The rules: • One team selects an object and drops it into the drop chamber. Do not let the other team see the object! • The other team tries to identify the object by its sound. Do not say what you think it is! They find the matching object in their set and respond by dropping it into the chamber. • The teams will say if the objects made the same sound. They lift the chamber, compare, and put the objects back. • The teams change roles and play again. • 5-10 minutes.

  9. Properties of sound • Tell one or two properties of the soundsof each drop object. • List properties:

  10. Sound discrimination Which sounds were the easiest to discriminate? Which sounds were the hardest to discriminate?

  11. Disassemble the drop chamber • Carefully take the chambers apart. • Make sure all of the drop objects are back in their bags. • GETTERS return the materials.

  12. Objectives • I can use adjectives to describe properties of sounds. • I can identify objects by the sounds they make. • I can discriminate sounds by their characteristics. • I can complete analogies using vocabulary words.

  13. source

  14. receiver

  15. code

  16. Vocabulary practice • Analogies • On is to off as black is to white. • Little is to small and big is to large.

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