Comprehensive Waves Quiz for 9th Grade Physics

Which type of wave involves particles moving perpendicular to the wave's direction of travel?

• Longitudinal waves
• Transverse waves
• Gravitational waves
• Electromagnetic waves

What does amplitude of a wave represent?

• Wave speed
• Wave frequency
• Maximum distance from equilibrium position
• Total wave length

In a longitudinal wave, particles move...

• Perpendicular to wave direction
• Parallel to wave direction
• In circular motion
• Against wave propagation

The Doppler Effect describes changes in wave frequency when...

• Wave source is stationary
• Observer is stationary
• Wave source moves relative to observer
• Wave amplitude increases

What is frequency measured in?

• Meters
• Seconds
• Hertz
• Watts

Which type of wave can travel through a vacuum?

• Sound waves
• Water waves
• Electromagnetic waves
• Mechanical waves

What determines the pitch of a sound wave?

• Amplitude
• Frequency
• Wave speed
• Wave length

What happens to waves when they enter a denser medium?

• Speed up
• Maintain same speed
• Slow down
• Disappear

The human ear can hear frequencies between...

• 10 Hz to 100 Hz
• 20 Hz to 20,000 Hz
• 1 Hz to 50 Hz
• 100 Hz to 500 Hz

Which wave type is used in medical imaging?

• Radio waves
• Infrared waves
• X-rays
• Microwaves