S8P4e Review

Which material is sound able to travel fastest through? Explain.

• Vacuums of empty space because there are no particles for the sound to have to bounce around.

• Gases because the particles are less packed together so the sound waves can move quickly through it.

• Solids because the particles are closely packed together and the sound waves can bounce off of each particle quickly.

• Liquids because the particles easily slide around on each other so the sound waves can slide with the liquid particles.

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Sound does not travel in space because

• The particles in a vacuum are too far apart for sound to bounce off of.

• There is not matter in space.

• Stellar gases get in the pathway of sound waves.

• This statement is incorrect, sound does travel in space.

Based on the data table, what material does light travel fastest through?

• empty space

• solids

• liquids

• gases

Based on the pattern in the data table, which material do you think light would travel fastest through?

• carbon dioxide

• liquid H2O

• solid H20

• liquid nitrogen

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NGSS.MS-PS4-2

Which material is light able to travel faster through? Explain.

• Vacuums of empty space because there are no particles for the light to have to bounce around.

• Gases because the particles are less packed together so the light waves can move quickly through it.

• Liquids because the particles easily slide around on each other so the light waves can slide with the liquid particles.

• Solids because the particles are closely packed together and the light waves can bounce off of each particle quickly.

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NGSS.MS-PS4-2

Based on the data table, which material do you think sound would travel the fastest through?

• carbon dioxide

• liquid H2O

• solid H2O

• liquid nitrogen

Use the data table above to determine what material sound would travel fastest through.

• solids

• liquids

• gases

• There is not enough data in the table to determine.

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NGSS.MS-PS4-2

The data table shows the speed of sound through different substances. Why does sound travel faster through salt water than distilled water?

• There are solid (salt) particles in salt water that sound can bounce quicker off of.

• Salt water is typically warmer than distilled water and sound travels faster in warmer conditions.

• Salt water is more abundant than distilled water, so sound is used to traveling through it.

• Sound does not travel faster through salt water according to this data table.

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The data table shows the speed of sound through different substances. What can you determine about the density of steel compared to the density of glass based on this data?

• Steel is more dense than glass because sound travels faster in steel. Speed of sound and density have a proportional relationship.

• Steel is more dense than glass because sound travels faster in steel. Speed of sound and density have an inversely proportional relationship.

• Steel is less dense than glass because sound travels faster in steel. Speed of sound and density have a proportional relationship.

• Steel is less dense than glass because sound travels faster in steel. Speed of sound and density have an inversely proportional relationship.

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What can you determine about the density of methanol based on this data table that shows the speed of sound through different materials?

• The density of methanol is less than sea water because sound travels slower in methanol.

• The density of methanol is the less than aluminum because sound travels slower in methanol.

• The density of methanol is more than sea water because sound travels slower in methanol.

• The density of methanol is more than iron because sound travels faster in methanol.