Unit 3 CFAs Redo

How do these waves differ from one another?

• They have different frequencies.

• They have different amplitudes.

• They have different wavelengths.

• They have different amplitudes, frequencies, and wavelengths.

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A metal spoon placed in a cup of hot cocoa becomes hot. Which process transfers

heat from the bowl of the spoon to the handle?

• conduction

• convection

• evaporation

• radiation

Which type of energy is transferred when an ice cube at 0°C is placed in a

container of water at 60°C?

• Mechanical

• Potential

• Thermal

• Sound

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Students in a lab form a wave by moving one end of a rope up and down, while the

other end is attached to a fixed point.

How will the characteristics of the wave change if they move the rope end up and

down a greater distance but do not change the time between wave crests?

• Frequency increases, wavelength decreases, and amplitude increases.

• Frequency decreases, wavelength increases, and amplitude does not change.

• Frequency and wavelength do not change, and amplitude increases.

• Frequency and amplitude increase, and wavelength does not change.

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Which statements correctly describe the characteristics of transverse waves and their

effects on energy, brightness, and color?

• Amplitude determines the color of light that people see, not brightness.

• Higher frequency waves carry more energy than lower frequency waves of the same

  amplitude.

• Light waves require a medium like air or water to travel through space.

• Amplitude determines the brightness of light but not its color.

• Higher amplitude waves have shorter wavelengths than lower amplitude waves of the

  same type.

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In the electromagnetic spectrum, which waves have the highest frequency?

• Visible light

• Gamma rays

• Infrared waves

• Microwaves

If the shaking from an earthquake becomes more violent but the number of shakes per

minute stays the same, which characteristic of the s-wave has changed?

• Frequency has increased

• Frequency has decreased

• Amplitude has increased

• Wavelength has decreased

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When pebbles are thrown in water, ripples begin to form on the surface of the water. The

small waves are known as transverse waves.

How do particles in a transverse wave move relative to the wave's direction of travel?

• Particles move up and down while the wave travels horizontally

• Particles move back and forth motion in a wave moving parallel.

• Circular motion of waves counterclockwise.

• Stationary waves that do not progress forward.

Microwave ovens use microwave radiation to cook food. Why is the microwave

range of the electromagnetic spectrum MOST LIKELY used for this purpose?

• Microwaves are the easiest type of radiation to produce.

• Molecules of substances, such as sugar and water, absorb radiation in these

  wavelengths and heat up.

• Microwaves are completely harmless to people, unlike other types of

  electromagnetic waves.

• Microwaves have more energy than most other types of electromagnetic

  radiation, such as ultraviolet and infrared waves.

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How will the characteristics of the wave change if they move the rope end up and

down a greater distance but do not change the time between wave crests?

• Frequency and wavelength do not change, and amplitude increases.

• Frequency increases, wavelength decreases, and amplitude increases.

• Frequency decreases, wavelength increases, and amplitude does not change.

• Frequency and amplitude increase, and wavelength does not change.

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