6 - Unit 3, Section 3 - Day 1

Waves and Energy

Unit 3, Section 3

Multiple Choice

The __________ of a wave is defined as how many individual waves pass one point in a second.

• Amplitude

• Frequency

• Wavelength

• Crest

Multiple Choice

The __________ of a wave is the height of the wave from the point of origin to the crest.

• Amplitude

• Frequency

• Wavelength

• Crest

• Waves can transmit (carry) energy as they travel

• The amount of energy a wave transmits depends on its:

  • Frequency

  • Amplitude

Energy and Waves

• As the frequency of wave increases, the energy it transmits also increases

• "As frequency goes up, so does energy"

Frequency and Energy

• Each wave carries a certain amount of energy

• If the frequency goes up, that means more waves hit an object every second

• That means more energy is transmitted

Frequency and Energy

• As the amplitude of wave increases, the energy it transmits also increases

• "As amplitude goes up, so does energy"

Amplitude and Energy

• As the amplitude of a wave increases, so does its size

• A larger wave can transmit more energy

• So, energy increases as amplitude increases

Amplitude and Energy

Multiple Choice

Which wave has more energy?

• A radio wave with a frequency of 100 MHz (megahertz)

• A radio wave with a frequency of 250 MHz (megahertz)

Multiple Choice

Which wave has the most energy?

• Wave 1 (Red)

• Wave 2 (Blue)

• Wave 3 (Green)