4th Grade Vocabulary Part Five

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4th Grade Vocabulary Part Five

• Forms of Energy

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Energy

• The ability to cause changes in matter

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Potential Energy

• The energy an object has because of its place or
  its condition

A roller coaster has the most potential energy at
the top of a hill.
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Kinetic Energy

• The energy of motion

A roller coaster has the most kinetic energy when
it is at the bottom of a hill.
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Sound Energy

• A form of energy that travels through matter as
  waves

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Sound Wave

• A moving pattern of high and low pressure that
  you can hear

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Vibration

• Rapid back and forth movement of matter that
  produces sound (examples violin string, vocal
  cords)

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Pitch

• The speed with which sound particles vibrate the
  faster the waves the higher the pitch

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Volume

• The loudness of sound

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Light Energy

• Energy that can travel through empty space and
  some kinds of matter

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Mechanical Energy
Energy that puts something in motion