Universe
1. Our
Solar System may have formed from the remains of a large star.
(a) Suggest how the Sun was formed. (3)
b) What changes to our Sun are likely to take place in the
future? (4)
2. The
Big Bang theory attempts to explain the origin and possible future of the
Universe.
(a) Describe the main features of the Big Bang theory. (3)
(b) State two pieces of evidence that support the Big
Bang theory. (2)
3. The Big Bang theory and
the Steady State theory are both about the beginning and possible future of the
Universe.
(a) (i) Explain the main
differences between the two theories.
Refer to the origin and likely future of the Universe in your answer.(4)
Refer to the origin and likely future of the Universe in your answer.(4)
(b) Give 2 pieces of evidence that are not
predicted by the Steady State theory that can be accounted for by the Big Bang
Theory. (4)
4. The graph shows how the recessional
speed of five galaxies varies with distance from the Earth.
(a) Describe the general
pattern shown by the graph (on the previous page) for how the recessional speed
changes with distance from the Earth (1)
(b) Explain
how the measurements support Hubble’s idea of the ‘Big Bang’ theory of the
origin of the Universe. (2)
(d) What
would be the distance to a galaxy having a recessional speed of 30 000 km/s? (2)
5. (a) A star like the Sun forms
when large clouds of hydrogen, helium and dust are attracted together by the
force of gravity. What is the name of the object formed before the sun became a
star. (1)
(b) How does a star produce energy? (2)
(c) Scientists believe that the
Sun will eventually become a white dwarf.
Outline the possible fates of
much larger stars. (5)
