Energy

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Energy

• By Paula Smith
• 6th Grade Science

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Teacher Page
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Energy makes things work.

• Most energy on earth comes from the sun.
• Energy of movement is called kinetic energy.
• Energy of position is called potential energy.

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Most energy travels in waves

• Some waves (such as sound waves) must travel
  through a medium (such as air).
• Electromagnetic waves do not need a medium to
  travel through. They radiate from the source.

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Waves are measured by their wavelength.
Wavelength is measured from crest to crest or
from trough to trough.
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Wave Frequency

• Frequency is the number of wavelengths that pass
  by in a certain amount of time.

Frequency is measured in hertz.
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• The shorter the wavelength, the higher the
  frequency, and the higher the energy.

• The longer the wavelength, the lower the
  frequency, and the lower the energy.

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The Law of Conservation of Energy

• Energy cant be created.
• Energy cant be destroyed.
• Energy can be converted from one form to another.

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Converting Energy
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You Try It!

• Discuss in your lab groups the different energy
  conversions that take place when a candle is lit.
• In your science notebook, describe the energy
  changes that happen when a candle is lit.

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You Try It!

• Your journal entry should mention heat and light.

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Teacher Page

• Missouri Standards
• SC 1 - Properties and principles of matter and
  energy.

• District Standards
• III C TLW investigate the movement of energy as
  waves through space and matter.

Students will need their science journal or a
piece of paper.