Waves, Matter and the Earth Concept Review Game

Electromagnetic Wave

• A wave that is produced from the interaction of electric and magnetic fields

• A wave that moves in a direction perpendicular to the displacement of the transmitting medium

• The observation that when a certain wavelength of light strikes a piece of metal, the electrons in the metal move, creating a current

• The number of wave cycles that pass a given point per unit of time

What steps need to be taken to ensure the validity of a report about the harm caused by a certain wavelength?

• Check the reasoning only, because the source of the information is not important when evaluating its validity.

• Use reliable sources and check the claim, evidence, and reasoning.

• Research the claim and evidence only.

• Nothing; all reports of harm have been proven true.

Vera decides to go fishing. Watching her fishing float bob up and down as the waves pass, she notices that there are about two seconds between successive waves. What is the frequency of the waves passing her float?

• 0.5 Hz

• 1.5 Hz

• 2 Hz

• 1 Hz

A wave that moves in a direction perpendicular to the displacement of the transmitting medium

• Transverse Wave

• Frequency

• Compressional Wave

• Electromagnetic Wave

Longitudinal Wave

• The observation that when a certain wavelength of light strikes a piece of metal, the electrons in the metal move, creating a current

• A wave that is produced from the interaction of electric and magnetic fields

• A wave that moves in a direction perpendicular to the displacement of the transmitting medium

• A wave that moves in the same direction as the displacement of the transmitting medium

Photoelectric Effect

• A wave that moves in the same direction as the displacement of the transmitting medium

• The number of wave cycles that pass a given point per unit of time

• A wave that is produced from the interaction of electric and magnetic fields

• The observation that when a certain wavelength of light strikes a piece of metal, the electrons in the metal move, creating a current

Fiber-optic devices transmit beams of light down thin, transparent filaments. Which of the following best describes the wave behavior that keeps the beam confined to the filament?

• The beam is refracted by the curvature of the filament.

• The beam is inducted by the filament.

• The beam is reflected back and forth across the filament.

• The beam is diffracted by the curvature of the filament.

Which of the following have shorter wavelengths and can ionize atoms, causing damage to living cells?

• Infrared, visible light, and X-rays

• Radio, microwave, and infrared

• Ultraviolet, X-rays, and gamma rays

• Visible light, infrared, and ultraviolet

Frequency

• A wave that moves in a direction perpendicular to the displacement of the transmitting medium

• A wave that moves in the same direction as the displacement of the transmitting medium

• The number of wave cycles that pass a given point per unit of time

• A wave that is produced from the interaction of electric and magnetic fields

Saturation divers who spend days or weeks under water often breathe a mixture of helium and oxygen. One side effect of this gas mixture is that it makes the divers' voices higher-pitched. What is the cause of this increase in pitch?

• Ultraviolet, X-rays, gamma rays, and sound waves travel faster in the helium-oxygen mixture, resulting in a higher frequency for the same wavelength.

• Sound waves travel slower in the helium-oxygen mixture, resulting in a higher frequency for the same wavelength.

• The helium-oxygen mixture decreases the amplitude of the waves, which increases their frequency.

• The helium-oxygen mixture increases the amplitude of the waves, which increases their frequency.