light

light

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Label

a) Crest

b) Wavelength

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• waves travel at speed of light 3 X 10 ⁸ m/s

• Frequency - number of waves/ second (Hertz)

• wavelength - distance from crest to crest

• wavelength and frequency are inversely proportional (when one goes up the other goes down)

• frequency and energy are DIRECTLY proportional (when one goes up the other goes up)

• RADIO WAVES: longest wavelength, lowest energy, lowest frequency

• GAMMA RAYS: shortest wavelength, highest energy, highest frequency

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properties of wave

1. waves travel at speed of light 3 X 10 ⁸ m/s

2. Frequency - number of waves/ second (Hertz)

3. wavelength - distance from crest to crest

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RELATIONSHIPS

1. wavelength and frequency are inversely proportional (when one goes up the other goes down)

2. frequency and energy are DIRECTLY proportional (when one goes up the other goes up)

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3. RADIO WAVES: longest wavelength, lowest energy, lowest frequency

4. GAMMA RAYS: shortest wavelength, highest energy, highest frequency

5. red light has longest wavelength, lowest frequency and lowest energy

6. violet light has shortest wavelength, highest energy, and highest frequency

Multiple Choice

Based on the picture above, which kind of wave has the lowest frequency?

• microwave

• ultraviolet

• infrared

• gamma rays

Multiple Choice

Based on the picture above, which kind of wave has the highest frequency?

• microwave

• ultraviolet

• infrared

• gamma rays

Multiple Choice

The letter b on the image above is represent for .........

• Wavelength

• Amplitude

• Frequency

• Speed

Multiple Choice

Which wave has a longer wavelength?

• wave C

• wave D

Multiple Choice

Which wave has a higher frequency?

• A

• B

Multiple Choice

Which wave in the diagram has the longest wavelength?

• 1

• 2

• 3

• 4

Multiple Choice

The number of waves per second is...

• frequency

• wave speed

• amplitude

• wavelength

Multiple Choice

The distance from one crest to the next corresponding cresst on a wave is called the ________________.

• waveform

• peak

• amplitude

• wavelength

Multiple Choice

A wave with a LONG wavelength will have a ______ frequency and _____ energy

• high, low

• high, high

• low, high

• low, low

Multiple Choice

What is the speed of light?

• 3 ms

• 3.0x10⁸ m/s

• 6.626x10^-34 Js

• 6.626x10^-34 J/s