What is ionisation?

What do spectral lines provide evidence for?

Why is the volume of a gas inversely proportional to its pressure, at room temperature?

Why do the pressures and volumes of a gas vary with temperature?

What is absolute zero?

How do you calculate constants of a gas?

How does a protostar form?

What is nuclear fusion?

How do you calculate the energy released during nuclear fusion?

The more _______ the star, the _________ its core and the __________ the nuclei created by fusion.

How is energy transported from core to surface in a star?

What is the Hertzsprung-Russell diagram?

Where is each type of star located on the HR Diagram?

Where does fusion occur in a main sequence star?

When does a star leave the main sequence?

What happens to it?

What happens in a red giant or supergiant?

What happens to a low-mass star?

What doesn't happen in a white dwarf?

What happens in a high-mass star?

What are exoplanets?

What is the evidence for exoplanets?