P6. Waves

What are the units for wavelength?

• Feet

• Metres

• Hertz

• Seconds

What happens to the frequency as the wavelength of a wave is halved? (assume v is constant)

• It halves too

• It goes down

• It doubles

• It remains constant

Which distance correctly shows one wavelength?

• A → C

• D → G

• B → F

• E → H

A sound wave with a larger amplitude would be

• quieter

• louder

• higher pitched

• lower pitched

Red light has a wavelength of 630nm. Which of these correctly show this in standard form.

• 6.3x10^-9

• 6.3x10^-7

• 63.0x10^-7

• 63.0x10^-9

Which letter shows an area of rarefaction

(a)  

Which of the following is NOT an electromagnetic wave?

• Infra-red

• Ultra Violet

• X-Ray

• Sound

Which of these electromagnetic waves has the shortest wavelength

• X-Rays

• Ultra-violet

• Red Light

• Blue Light

An electromagnetic wave travels at 300,000,000m/s. Calculate the wave length of a EM wave with a frequency of 300kHz

(a)  

A bat emits a sound wave with a frequency of 25,000Hz and a wavelength of 0.0136m. Calculate the speed of sound.

(a)