Astrophysics Edexcel IGCSE

Front

What are the two properties used to classify stars?

Back

Colour and surface temperature.

Front

What is the evidence of the expansion of the universe?

Back

Red shift.

Front

What is the brightness of a star as seen in the night sky called?

Back

Apparent magnitude.

Front

How might a star much greater in mass than the Sun end its life?

Back

It will cool and become a supergiant which will then explode into a supernova, leaving a black hole.

Front

What nuclear reaction occurs in the core of stars?

Back

Nuclear fusion.

Front

What is the term for the distance light travels in one year?

Back

Light year.

Front

What is the main component of stars?

Back

Hydrogen.

Front

What is a supernova?

Back

A massive explosion that occurs at the end of a star's life cycle.

Front

What is a black hole?

Back

A region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is the cosmic microwave background radiation (CMBR)?

Back

The afterglow radiation from the Big Bang, providing evidence for the universe's expansion.