Study

Oxygen - 3rd Std

  •   0%
  •  0     0     0

  • is there Oxygen in the Air? How much?
    Yes, 21%
  • Can Phytoplankton be seen with the Naked Eye?
    No, they are too small to be seen with the naked eye
  • When was Oxygen Created on Earth, and How?
    Millions of years ago, tiny creatures called Blue Algae released Oxygen through Photosynthesis
  • What is the Symbol of Oxygen?
    O
  • How do Phytoplankton give out Oxygen?
    They take in Sunlight, Water and Carbon Dioxide and turn it into Energy through a process called Photosynthesis
  • How much Oxygen in the Air is given out by them?
    50%
  • Sometimes we can see Phytoplankton. How can we see it?
    Sometimes we see it on the surface of the water as Green Patches
  • Which State of matter is Oxygen?
    Gas
  • Is Oxygen Visible or Invisible? Is it a Solid, Liquid or a Gas?
    Invisible, It is a Gas
  • Do all the Oxygen we breathe come from Trees?
    No, only 20%. Rest comes from Ocean Plants called Phytoplankton