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Light and Shadow

Across
Colors red, green and blue
These waves are long and have low energy
Any material which allows some light to pass but is not transparent
Light is a waveband of this spectrum
Objects that don't allow light to pass but cast a shadow are
Green plants use this energy to synthesize nutrients
Is sensitive to narrow range of wavelengths
Down
Any material that lets light pass through
Another form of Energy
This spectrum is seen by the eye
The term for gases that absorb heat using methane and CO2
Short high energy waves
A protective barrier around the planet