Electromagnetic Waves
Cards (27)
- What type of spectrum do electromagnetic waves form?
- What is the order of electromagnetic radiation from lowest to highest frequency?
- How do the speeds of EM radiation differ in a vacuum and in air?
- What property of waves in different mediums causes refraction?
- What type of waves can be produced by oscillations in an electrical circuit?
- How can radio waves create an alternating current in a circuit?
- Where do gamma rays originate from?
- What health effects can ultraviolet waves cause?
- What are three practical uses for infrared radiation?
- What are two practical uses for microwave radiation?
- What are two practical uses for radio waves?
- What wave phenomenon is used by lenses to form an image?
- How does a convex lens form an image?
- What is meant by the focal length of a lens?
- What is the difference between the image produced by a convex and a concave lens?
- Why does magnification not have a unit?
- What symbol represents a convex lens in a ray diagram?
- What symbol represents a concave lens in a ray diagram?
- What determines the colour of visible light waves?
- What colour of visible light has the highest frequency?
- What colour of visible light has the largest wavelength?
- What is meant by the term ‘specular reflection’?
- What is meant by the term ‘diffuse reflection’?
- How does a red colour filter work?
- What happens to the wavelengths of light that aren’t reflected by an opaque object?
- What colour does an object appear if all wavelengths are reflected equally?
- What colour does an object appear if all wavelengths are absorbed?