Physics (light)

• What is light a form of?

  energy
• light travels at a speed of what?

  300,000km per second
• light travels as a particle also know as a what?

  photon
• a photon is a bundle of what?

  electromagnetic engery
• photons can move in a what?

  wavelike fashion
• what do sound waves move in?

  longitudinal waves
• how does light move?

  transverse waves
• types of electromagnetic radiation?

  radio, microwaves, infrared, visible light, ultra violet, X-ray, gamma rays.
• visible light region of the electromagnetic spectrum?

  red, orange, yellow, green, blue, indigo, violet
• light is radiation therefore it can be...

  Transmitted, reflected, absorbed
• what are objects that emit light called?

  luminous
• what are objects that do not produce their own light called?

  non-luminous
• law of reflection

  angle of incidence is equal to angle of reflection
• what is lateral inversion?

  the image in a mirror that is reversed horizontally.
• why does a pencil appear to bend and be shorter when part of it os submerged?

  the light and density of the median.
• what does light do when it travels from one transparent substance to another?

  it bends
• what is a lens?

  a transparent piece of plastic or glass that us shaped to curve inwards or outwards.
• what is lens designed to do?

  refract light
• what why do convex sense bulge?

  outwards
• what why do concave sense bulge?

  inwards
• what does ''converging'' lens cause?

  it causes parallel rays of light to come together or converge
• where does light converge?

  at a point called the focus
• the distance between the lens and the focal is called the..?

  focal length