Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. (Physics only) What evidence is there for the Big Bang theory?
   • (Physics only) There are two key pieces of evidence for Big Bang theory. These are red shift and the Cosmic Microwave Background radiation. Red shift shows us that galaxies are all moving away from us and cosmic microwave radiation shows that there are microwaves coming from every direction in space. Big Bang theory says this is Energy created at the beginning of the universe, just after the Big Bang, and that has been travelling through space ever since.
2. (Physics only) Do we know everything about the universe? If not give examples of things we don't yet understand.
   • (Physics only) No, there is still much about the universe that is not understood, for example dark mass and dark Energy.