Lifecycle Of A Star Diagram

The life cycle of stars stars are born in nebulae. The main sequence phase of a stars life cycle is that time during which hydrogen fusion takes place in its core.

Background Life Cycles Of Stars

Students will complete a diagram to help them visualize the life and death of a star.

Lifecycle of a star diagram. They vary dramatically in size luminosity and temperature and live for billions of years transitioning through several stages. Stars are composed primarily of hydrogen and helium gases. Huge clouds of dust and gas collapse under gravitational forces forming protostars.

These young stars undergo further collapse forming main sequence stars. A star in the upper right corner of the diagram would be cool and bright. The life cycle of stars use this astronomy worksheet to learn about the stages in the life cycle of a star.

But in terms of the h r diagram main sequence also refers to a roughly diagonal slightly s curved line stretching between the upper left and lower right corners on which main sequence stars chart. Depending on the mass of the star its lifetime can range from a few million years for the most massive to trillions of years for the least massive which is considerably longer than the age of the universethe table shows the lifetimes of stars as a function of their masses. However their life cycles start to differ after the red giant phase.

Nuclear reactions at the centre or core of stars provides enough energy to make them shine brightly for many years. How does the h r diagram explain the life cycle of a star the main sequence phase of a star s life cycle is that time during which hydrogen fusion takes place in its core but in terms of the h r diagram main bbc gcse bitesize life cycles of stars life cycles of stars a star goes through a life cycle this is determined by the size of the star the diagram below. On the right of the illustration is the life cycle of a massive star 10 times or more the size of our sun.

It shows stars of different ages and in different stages all at the same time. As the core runs out of hydrogen and then helium the core contacts and the outer layers expand cool and. A massive star will undergo a supernova explosion.

Lifecycle of a star diagram. Our own sun is a typical star one of hundreds of billions that litter the milky way. Life cycle of a star stars are formed in clouds of gas and dust known as nebulae.

Like low mass stars high mass stars are born in nebulae and evolve and live in the main sequence. Stars expand as they grow old. The sun rests approximately in the middle of the diagram and it is the star which we use for comparison.

A star in the upper left corner of the diagram would be hot and bright. Stellar evolution is the process by which a star changes over the course of time.

The Life Cycle Of Stars