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16 Cards in this Set

  • Front
  • Back

What is the electromagnetic spectrum?

The electromagnetic spectrum consists of a family of waves which travel energy .

What speed does the waves of the electromagnetic spectrum travel at?

They all travel at the speed of light in a vacuum- 3.0×10^8ms-¹

What types of waves are in the electromagnetic spectrum?

All the waves are transverse and are able to travel through a vacuum.

The shorter the wavelength…

The shorter through wavelength the higher frequency the wave has

The longer the wavelength…

The longer the wavelength the lower frequency the wave has.

What is the order of the waves in the electromagnetic spectrum from low frequency to High frequency

Radio waves, television waves, microwaves, infrared, visible light, ultraviolet, x-rays, gamma rays

Which waves of the electromagnetic spectrum has the highest frequency?

Gamma rays has the highest frequency therefore carries the most energy.

List few points about radio and television waves

•they are all around us


•has the longest wavelength on the electromagnetic spectrum


•Produces sound or visual images

List few points about microwaves

•shorter wavelength than radio and television waves


•used in telecommunications and mobile phones


•used in microwave ovens when they cause water molecules in food to vibrate and generate heat.

List few points about Infrared waves

•any object hotter than its surrounding will have infrared radiation


•detected with special cameras-infrared film/thermographic cameras


•treat muscle injury


•help diagnose diseases

List few points about Visible light

•detected by our eyes/color we see Depending upon the frequency/wavelength of the light


List few points about ultraviolet

•comes from the Sun


•Cab be produced by special lamp


•cause skin to tan


•dangerous as it can cause skin damage-skin cancer


•cause certain materials to fluoresce or glow

Make a few points about X-rays

•has the ability to pass through the human body


•detected by photographic film


•bones appears pale in a X-ray •metals appear white in an X-ray




Make a few points about Gamma rays

•most dangerous of the electromagnetic spectrum


•can be put to used in medicine


•used to destroy tumors inside a paitent's body


What is the energy of a photon of electromagnetic radiation dependent upon?

The energy of a photon of electromagnetic radiation is dependent upon the frequency of the radiation. The higher the frequency, the greater the energy of the photon

Explain approached that are taken to miniseries the risks of ultra violet

Wearing UV blocking sunscreen on sunny days can avoid skin cancer. We should wear hats and sunglasses to avoid blindness.