Sound Wave Refraction Quiz

What is the primary purpose of the microphone in the sound wave refraction experiment setup?

• To detect sound waves

• To block sound waves

• To generate sound waves

• To amplify sound waves

How does the presence of carbon dioxide in the balloon affect the sound wave?

• It increases the amplitude

• It blocks the sound wave completely

• It has no effect on the amplitude

• It decreases the amplitude

What causes sound waves to converge when moving from air into a denser medium?

• The sound waves slow down

• The sound waves speed up

• The sound waves are absorbed

• The sound waves are blocked

In the context of sound wave refraction, what does 'approaching the normal' mean?

• Sound waves bend away from the normal line

• Sound waves are blocked

• Sound waves are absorbed

• Sound waves bend towards the normal line

Why does the amplitude of sound decrease when helium is used in the balloon?

• Helium absorbs sound waves

• Helium blocks sound waves

• Helium is less dense than air

• Helium is denser than air

What happens to sound waves when they enter a helium-filled balloon?

• They remain unchanged

• They converge

• They diverge

• They are absorbed

What is the main factor that causes sound waves to diverge when exiting a helium-filled balloon?

• Helium's ability to block sound

• Helium's ability to absorb sound

• Helium's lower density

• Helium's higher density

Why is the sound of a distant train louder at night?

• The train is closer at night

• The air is cooler near the ground at night

• The train makes more noise at night

• The air is warmer near the ground at night

How does temperature affect the speed of sound?

• Temperature has no effect on sound speed

• Sound moves faster in cooler air

• Sound moves slower in warmer air

• Sound moves faster in warmer air

What is the effect of sound wave refraction at night near the ground?

• Sound waves diverge

• Sound waves converge

• Sound waves are absorbed

• Sound waves are blocked