Sound, Light, Mirrors & Lenses Quiz

What type of waves are sound waves?

• Transverse waves
• Compressional waves
• Electromagnetic waves
• Surface waves

How does the speed of sound change in different states of matter?

• Faster in gases
• Faster in liquids
• Faster in solids
• Speed is the same in all states

What is the unit used to measure loudness?

• Hertz
• Decibels
• Watts
• Joules

What determines the pitch of a sound?

• Amplitude
• Frequency
• Wavelength
• Intensity

What is the purpose of resonators in musical instruments?

• To change the pitch
• To amplify sound
• To absorb sound
• To create silence

What is echolocation primarily used for?

• To measure sound intensity
• To locate objects using sound
• To create music
• To amplify sound

What type of mirror curves inward?

• Plane mirror
• Convex mirror
• Concave mirror
• Flat mirror

What is the angle of incidence?

• The angle at which light reflects off a surface
• The angle at which light strikes a surface
• The angle of refraction
• The angle of sound waves

Which type of lens is used to focus light in the human eye?

• Concave lens
• Convex lens
• Flat lens
• Biconcave lens

What is the role of the retina in the eye?

• To focus light
• To convert light into electrical signals
• To protect the eye
• To reflect light