A decibel measures the ______ of a sound

• wavelength

• frequency

• speed

• relative intensity

The amplitude of a wave is

• length of one wave.

• frequency.

• state of rest.

• displacement from its state of rest.

If a 60-dB sound increases to an intensity of 70 dB, about how much louder is the sound?

• 10 x

• 1 x

• 2 x

• 3 x

A sound with a large amplitude will transmit a

• lot of energy

• high frequency

• long wavelength

• low intensity

A denser medium will generally make a sound wave travel

• slower

• faster

• the same speed

• not at all

Which statement is NOT true?

• Light travels with or without a medium.

• Sound must have a medium to travel through.

• Both light and sound must have a medium to travel through.

• Light travels faster than sound.

What are the colors of the visible spectrum?

• White, red, yellow, green, blue, violet

• White, red, yellow, green, blue violet, ultraviolet

• Red, orange, yellow, green, blue, violet

• Red, yellow, green blue, violet, ultraviolet

When white light shines on a film and violet light is transmitted through the film, the film

• added violet light to the white light.

• added ultraviolet light to the white light.

• absorbed ultraviolet light from the white light.

• absorbed all the colors except violet from the white light.

Which material transmits the most visible light?

• Sunglass lens

• Mirror

• Clear glass

• Black cloth

Which material absorbs the most visible light?

• Sunglass lens

• Mirror

• Clear glass

• Black cloth