Question

10. Explain the phases Gibbous Waxing Moon and
a Crescent Moon.
11. What is a parsec? Express 1 parsec in kilometres
and light years.​

Answer 1

The Bohr model shows the atom as a central nucleus containing protons and neutrons with the electrons in circular orbitals at specific distances from the nucleus (Figure 1). These orbits form electron shells or energy levels, which are a way of visualizing the number of electrons in the various shells.Aug 15, 2020