BMST Waves, Sound, and Light 4

Question 1

A wave travels from water into air. Compared to its speed in water, the wave's speed in air will:

Accepted Answer

Increase

Answer

Sound travels faster in denser media like water than in less dense media like air, so moving from water to air decreases speed; however, light travels faster in air than in water.

Question 2

Which property of a wave determines the pitch of a sound?

Accepted Answer

Frequency

Answer

Frequency determines pitch; higher frequency vibrations produce higher-pitched sounds.

Question 3

When light passes through a prism, the colors separate because different wavelengths of light travel at different speeds inside the glass. This phenomenon is called:

Accepted Answer

Dispersion

Answer

Dispersion is the separation of white light into its component colors due to different wavelengths refracting at different angles.

Question 4

Two waves are said to be 'in phase' when they:

Accepted Answer

Reach their crests and troughs at the same time

Answer

Waves in phase have their crests and troughs aligned simultaneously, leading to constructive interference.

Question 5

A guitar string vibrating at its fundamental frequency also produces overtones. These overtones are called:

Accepted Answer

Harmonics

Answer

Harmonics (overtones) are integer multiples of the fundamental frequency produced by a vibrating string.

BMST - Basic Math and Science Test Practice Test

BMST - Basic Math and Science Test Practice Test

BMST Waves, Sound, and Light 4