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Related Flashcards
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Cards In This Set
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What is sound?
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Sound is anything that can be heard and is a form of energy.
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Why do we use sound?
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We use sound to communicate with others to find out about what’s going on around us
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What is energy?
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Energy is the ability to make things move. It is needed to start the vibrations that make sound.
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How is sound made?
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Sound is made by the vibrations of an object. To make a sound all or part of the object has to vibrate.
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What are vibrations?
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Vibrations are the back and forth movements of an object. Vibrations can be powerful, weak, fast or slow.
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How do your vocal cords produce sound?
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Vocal cords (2leathery flaps with space between for air) when you speak they move closer causing them to vibrate & create sound
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Energy comes in many forms. Name 6 types
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Chemical energy, Heat energy, Electrical energy, Energy of motion, Solar energy,Sound energy
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Chemical energy
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Chemical bonds hold together the tiny particles that make up everything. When the bonds are broken, energy is released.
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Heat energy
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Goes from warm things to cold things.
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Electrical energy
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Flows along electrical lines and gives an iron, for example energy.
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Energy of motion
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Anything that moves has this kind of energy
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Solar energy
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The sun produces this energy for all living things on earth.
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Sound energy
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Energy of vibrations.
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How does sound travel?
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Sound travels in waves that move in all directions.
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Why is it harder to hear someone far away than close?
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The farther sound waves travel, the weaker they get.
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