6 - Unit 3, Section 3 - Day 2

Waves and Energy

Unit 3, Section 3

Multiple Choice

The energy a wave transmits depends upon its:

• Wavelength and Frequency.

• Amplitude and Frequency.

• Amplitude.

• Frequency.

Multiple Choice

As frequency increases, the energy a wave transmits:

• Increases.

• Decreases.

Multiple Choice

As the amplitude of a wave increases, the energy the wave transmits:

• Increases.

• Decreases.

Multiple Choice

Which of the following waves has the most energy?

• A tidal wave with a height of 5 meters

• A tidal wave with a height of 15 meters

• A tidal wave with a height of 25 meters

Multiple Choice

Which of the following waves has the most energy?

• An acoustic wave with a frequency of 15,000 Hz

• An acoustic wave with a frequency of 1,500 Hz

• An acoustic wave with a frequency of 150 Hz

• When waves interact with matter, they can transfer the energy they are carrying to it

• This energy can be transformed (changed) into different forms

Waves and Matter

The energy transmitted by the wave transforms into another type based on:

• The type of wave

• The amount of energy in the wave

• The matter with which the wave is interacting

What Determines The Type of Energy?

Examples of Energy Transformation From Waves

• ​Infrared Radiation - transformed into thermal energy (heat) when it interacts with matter

• Ultraviolet Radiation - transformed into chemical energy as it breaks the chemical bonds in matter

• Microwave Radiation - transformed into thermal energy when it interacts with water molecules and causes them to speed up

Mechanical Wave - any wave that must have a medium to travel

• Sound waves

• Seismic waves (earthquakes)

• Water waves

• They transfer mechanical energy

What About Mechanical Waves?