2nd Semester Review

Students used rope to model radio waves and microwaves. Compared to the model of radio waves, the model of microwaves has a greater—

• A period

• B amplitude

• C frequency

• D wavelength

Tags

NGSS.MS-PS4-1

A student uses a springy metal coil to model a wave, as shown below.

• Transverse wave

• Longitudinal wave

• Standing wave

• Diffraction wave

Tags

NGSS.MS-PS4-1

• A Radio

• B Infrared

• C X-ray

• D Gamma radiation

Tags

NGSS.HS-PS4-1

The pitch of a sound wave is determined by the __________ of the sound wave.

• J frequency

• amplitude

• wavelength

• speed

Which of the following has the shortest wavelength?

• A dog growling at a frequency of 85 Hz

• A cello played at a frequency of 150 Hz

• A male teacher speaking at a frequency of 520 Hz

• A female American Idol contestant singing at a frequency of 2,100 Hz

Tags

NGSS.MS-PS4-1

The loudness of a sound made by plucking a guitar string is determined by the —

• speed of the sound wave

• shape of the guitar

• frequency of the vibrating string

• amplitude of the sound wave

Tags

NGSS.MS-PS4-1

A veterinarian installs a programmable microchip under the skin of a new pet that, when scanned, gives off a signal that indicates the name of the owner and the vaccinations the pet has been given. What type of wave would be the safest and most effective for this microchip to use?

• Microwaves

• Radio waves

• Light waves

• Infrared waves

Tags

NGSS.MS-PS4-3

A submarine sonar transmitter emits a burst of waves while submerged. The waves reflect off an object in the distance and return to the submarine. The time that it takes for the waves to travel to the object and return to the submarine tells the sonar operator—

• the distance of the object from the submarine

• the contents of the object

• the weight of the object

• the wavelength of the object

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What happens to the speed and frequency of a light wave when it passes from water into air?

• The speed increases, and the frequency remains the same.

• The speed increases, and the frequency decreases.

• The speed decreases, and the frequency remains the same.

• The speed decreases, and the frequency increases.

Tags

NGSS.MS-PS4-2

A bat emits a series of short, high-pitched sounds that bounce off an object to give the bat a sense of what is in its path. Which of the following best describes the principle being used?

• Reflection

• Refraction

• Resonance

• Ultrasound

Tags

NGSS.MS-PS4-2