Astronomy : Lives of Stars (II) Quiz

Quiz
*Theme/Title: Lives of Stars (II)
* Description/Instructions
Stars larger than our sun burn faster and are very bright. When hydrogen fusion in the star’s center ceases, then helium nuclei begin to fuse. The temperature increases and the star swells in size and becomes a red giant. When helium fusion stops, carbon fusion begins in the star’s core. Carbon fusion produces heavier elements. The balance of internal pressure and external pressure become unequal and the star collapses and then explodes. This event is called a supernova. Heavier elements are hurled into outer space during a supernova and it is here when elements heavier than iron are synthesized. Supernovas are bright enough to be seen with the naked eye and in daylight.

Supernova remnants can form neutron stars, which are super-dense and spin very fast. Neutron stars are also known as pulsars. Sometimes supernova remnants can form black holes, which are remains of supergiant stars that have collapsed in on themselves. Black holes are so dense that nothing can escape their gravitational forces, not even light.
This quiz covers the life cycle of stars. Use the above information to assist in answering the questions. Read the description and identify the best answer from the choices.


Group: Physics Physics Quizzes
Topic: Astronomy


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