Unit 8: Waves

In comparison to how they move through air (gases), how do sound waves behave when they pass through solids?

• They travel faster because solids are more densely packed than gases.

• They travel at the same speed because the type of material does not affect sound waves.

• They disappear, as solids absorb all the sound energy and prevent it from traveling.

• They travel slower because solids resist the movement of sound waves more than gases do.

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NGSS.MS-PS4-2

During a science experiment, Maria notices that a black t-shirt heats up more quickly than a white one under the same sunlight. Which phenomenon of light does this observation best exemplify?

• Refraction

• Reflection

• Absorption

• Diffusion

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NGSS.MS-PS4-2

Which of these correctly shows types of radiation increasing in energy?

• cosmic rays → x-rays → microwaves → TV waves

• microwaves → TV waves → x-rays → cosmic rays

• TV waves → microwaves → cosmic rays → x-rays

• TV waves → microwaves → x-rays → cosmic rays

Which of the following lists contain three parts of the electromagnetic spectrum that allow us to study and record detailed images from space?

• visible light, infrared light, X-rays

• sound waves, X-rays, radio waves

• gamma rays, infrared light, sound waves

• seismic waves, gamma rays, radio wave

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NGSS.HS-PS4-1

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What is the responding (dependent) variable in this experiment?

• the light used

• the thermometer used

• the color of the paper

• the time of exposure to the light

Which statement accurately compares a radio wave and an infrared wave?

• A radio wave has a longer wavelength and a lower frequency than an infrared wave.

• A radio wave has a longer wavelength and a higher frequency than an infrared wave.

• A radio wave has a shorter wavelength and a lower frequency than an infrared wave.

• A radio wave has a shorter wavelength and a higher frequency than an infrared wave. compressed

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NGSS.MS-PS4-1

Calvin shines a thin beam of light onto a material. The light beam refracts. Which of the diagrams shown below best shows what happens to the light?

• [Diagram A]

• [Diagram B]

• [Diagram C]

• [Diagram D]

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NGSS.MS-PS4-2

Electromagnetic radiation has a wide range of frequencies and wavelengths. Look closely at the electromagnetic spectrum shown in the illustration below. What conclusion can you make about electromagnetic radiation from this illustration?

• A. Gamma rays have the lowest frequency.

• B. Some gamma rays can have the same frequency as X rays

• C. Visible light consists of wavelengths with the widest range of frequencies.

• D. The shorter the wavelength is, the lower the frequency of the electromagnetic radiation.

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NGSS.MS-PS4-1

The table shows the hawk and mouse populations in a given environment over a period of 40 years. Hawks prey on mice as a main food source. Which of these statements is best supported by the data?

• The growth rate of mice was least in 1990.

• The growth rate of mice was greatest in 2000.

• The growth rate of hawks was slowest between 1980 and 1990.

• The growth rate of hawks was greatest between 2000 and 2010.

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NGSS.MS-LS2-1

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Which statement best compares gamma rays to the other components of the electromagnetic spectrum?

• Gamma rays have the longest wavelengths, highest frequencies, and greatest energies

• Gamma rays have the longest wavelengths, lowest frequencies, and lowest energies.

• Gamma rays have the shortest wavelengths, highest frequencies, and greatest energies.

• Gamma rays have the shortest wavelengths, lowest frequencies, and lowest energies.

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NGSS.MS-PS4-1