Waves illuminate

How are energy and wavelength related?

• The Sun's energy leaves as radiation of a single wavelength but can change wavelengths along the way, with the shortest wavelengths being particles that gained the most energy on the path to Earth.

• The Sun's energy leaves as radiation of a single wavelength but can change wavelengths along the way, with the shortest wavelengths being particles that lost the most energy on the path to Earth.

• The Sun's energy arrives as radiation with a wide range of wavelengths and the more energetic the wave the shorter the wavelength

• The Sun's energy arrives as radiation with a wide range of wavelengths and the more energetic the wave the longer the wavelength.

Which has more energy and why?

• The red wave has more energy because it has a greater height.

• The red wave has more energy because it has a greater frequency

• The blue wave has more energy because it has a greater amplitude.

• The blue wave has more energy because it has a longer wavelength.

What happens to the amplitude of a soundwave when energy transfer is increased?

• As the transfer of energy is increased, the amplitude stops and no sound is made.

• As the transfer of energy is increased, the amplitude decreases causing the sound to get quieter

• As the transfer of energy is increased, theamplitude increases causing the sound to get

  louder.

• As the transfer of energy is increased, the amplitude remains the same keeping thesound

  constant.

When the particles of a medium are vibrating at right angles to the direction of energy transfer, then the wave is a

• longitudinal wave

• transverse wave

• sound wave

• standing wave

Which of the following statements is true with regard to electromagnetic waves?

• Changing electric and magnetic fields produce compressional waves perpendicular to both fields.

• Changing electric and magnetic fields produce transverse waves parallel to both fields

• Changing electric and magnetic fields produce compressional waves parallel to both fields

• Changing electric and magnetic fields produce transverse waves perpendicular to both fields.

A student is studying a type of wave. Which question will help the student determine if it is an electromagnetic wave?

• Is it a light wave?

• Is it a water waver?

• Is it a sound wave?

• Is it a seismic wave?

Why does a boat that is bumped by a wave not actually move to another position in the water?

• The wave does not move matter, only energy.

• The boat is too heavy for the wave to move.

• There is too much friction between the boat and the water.

• There wave does not have enough particles to move theboat.

Which question can determine whether a wave is a mechanical wave or an electromagnetic wave?

• Can the wave transmit energy?

• Is the wave a transversewave?

• Can the wave travel in a vacuum?

• Does the wave have a frequency?

An earthquake on the ocean floor produced a giant wave called a tsunami. The tsunami traveled through the ocean and hit a remote island, causing a lot of damage. Is the water that hit the island the same water that was above the earthquake on the ocean floor?

• Yes, the energy from above the earthquake moved the individual water particles toward the island.

• Yes, the water particles moved toward the island while the energy remained above the earthquake.

• No,the water from abovethe earthquake stayed in the same place and only the energy was transferred.

• No, the energy in the wave pushed the water particles from above the earthquake in the opposite direction.

Waves that transfer energy parallel to the direction of vibration are known as

• water waves

• transverse waves

• longitudinal waves

• electromagnetic waves