ACT Science Weird Graph

What is on the x axis?

• intensity (Hz)

• intensity (db)

• frequency (Hz)

• frequency (db)

Tags

NGSS.HS-PS4-1

What is on the yaxis?

• intensity (Hz)

• intensity (db)

• frequency (Hz)

• frequency (db)

Tags

NGSS.HS-PS4-1

What does the dashed line represent?

• sound in air

• sound in water

• threshold of hearing

• threshold of pain

What does the dotted line represent?

• sound in air

• sound in water

• threshold of hearing

• threshold of pain

Which of these would cause pain in human ears?

• anything over 0 db

• 160 db

• 40 db

• 118 db

Tags

NGSS.MS-PS4-1

What is the lowest frequency humans can hear?

• 2 Hz

• 20 Hz

• 3 x 10⁴ Hz

• 2 x 10⁵ Hz

Tags

NGSS.HS-PS4-1

A certain dog whistle produces a frequency of 1 x 10⁴ Hz. At 10 db, humans would not hear the sound because

• humans don't hear frequencies below 20 Hz

• humans don't hear frequencies above 1 x 10⁴ Hz

• 1 x 10⁴ Hz at 10 db is below the human threshold of hearing

• humans don't hear frequencies above 2 x 10⁴ Hz

Tags

NGSS.HS-PS4-1

What is the highest frequency humans can hear?

• 2 Hz

• 2 x 10¹ Hz

• 4 x 10⁴ Hz

• 2 x 10⁴ Hz

Tags

NGSS.HS-PS4-1

Based on the figure, sound intensity is greatest in

• air for any value of S

• water for any value of S

• air at S = 10^-8 % only

• water at S = 10^-8 % only

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

A certain bass violin produces a frequency of 1 x 10² Hz. In order for humans to hear this note, the intensity would have to be at least

• 0 db

• 20 db

• 40 db

• 118 db

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5