Science unit 5

• Light source is where light comes from
• Light travels in straight lines
• Observer is a person who watches the flower
• Light travels in straight lines
• Light does not bend
• Light ray: Light particals that travel in straight lines
• Reflected rays means light rays that bounce off from objects .
• Absorb : when a object absorbs light it takes .light in without reflecting it back like wooden surfaces
• Like wooden surfaces So, this effects some object by making them warmer (absorbing the light = heat energy
• Mirrors ; smooth shiny surfaces that reflects light .
• Reflection is beacuse it reflects the light back into our eyes
• Use of mirrors

  1. Dentist for fixing teeth
  2. Cars to see what it looks from behind
• Why do we see ourselves in the mirror


  Beacuse it reflects back into our eyes we call this reflection image.
• Simple trick _ if u cannot see your reflection on a surface it means it absorbs light
• Space : black empty void that the sun , planet etc ... are in .
• Stars : giant firey spheres that give light and energy e.g the sun
• Orbit - the moon orbits around the earth which takes 29 day that is a month
• The earth orbits around the sun which takes 365 days to complete a full bit