types of electromagnetic waves

• What type of wave has the longest wavelength in the electromagnetic spectrum?

  Radio waves
• What are radio waves primarily used for?

  Communication including broadcasting and signals
• What is the primary use of microwaves?

  Heating food in microwave ovens
• How do infrared waves compare to microwaves in terms of wavelength?

  Infrared waves are shorter than microwaves
• What are some applications of infrared waves?

  Remote controls and thermal imaging
• What is visible light?

  The part of the spectrum detectable by the eye
• How many colors does visible light consist of?

  Seven colors
• What everyday sources emit visible light?

  The sun, light bulbs, and fire
• What is the wavelength of ultraviolet (UV) light compared to visible light?

  Shorter than visible light
• What are some effects of UV light exposure?

  Causes suntans and sunburns
• How is UV light used in medicine?

  In controlled doses for treatments
• What are X-rays primarily used for?

  Imaging bones and internal structures
• How do gamma rays compare to other electromagnetic waves?

  They have the shortest wavelengths and highest energy
• What emits gamma rays?

  Radioactive substances and supernova explosions
• What is a key property of all electromagnetic waves?

  They travel at the speed of light in a vacuum
• How do electromagnetic waves differ from sound waves?

  Electromagnetic waves can travel through a vacuum
• What type of wave are electromagnetic waves classified as?

  Transverse waves
• What can electromagnetic waves undergo?

  Reflection, refraction, diffraction, and interference
• How do electromagnetic waves carry energy?

  Based on their frequency and wavelength
• What can excessive exposure to higher energy waves cause?

  Cell damage or ionisation
• What health risks are associated with overexposure to UV light?

  Skin cancers and other skin conditions
• Why is it important to balance exposure to electromagnetic waves?

  Considering practical applications and health risks