How is this "History"?
You are more likely to get help, if the post is adequately labeled and you show your attempts to answer.
Which of the following is true of frequency and volume?
A) The frequency is not affected as the volume of sound increases.
B) The frequency increases as the volume of sound increases.
C) The frequency decreases as the volume of sound increases.
D) The frequency speeds up as the volume of sounds increases.'
Many devices use the electromagnetic spectrum including radios, cell phones, and medical equipment. When designing a device using the electromagnetic spectrum, which type of waves will provide the device with the most energy?
A) waves that have shorter wavelengths and higher frequencies
B) waves that have longer wavelengths and lower frequencies
C) waves that have shorter wavelengths and lower frequencies
D) waves that have longer wavelengths and higher frequencies
When the pitch of a wave increases, the wavelength of the wave:
A) doubles
B) increases
C) decreases
D) stays the same
Isabela creates a demonstration showing a sound echo. How could she demonstrate this?
A) She throws a rubber ball at a wall, and it bounces back to her.
B) She throws water at a wall, and it drips down the wall.
C) She throws an egg at a wall, and it breaks and falls to the floor.
D) She throws sand at a wall, and it hits the wall and falls to the floor.
Which of the following is NOT a type of radiation from the Sun?
A) ultraviolet waves
B) radio waves
C) x-ray waves
D) television waves
1 answer