Exam 12: Predicting the Violent End of the Largest Stars

What separates a black hole from the rest of our universe?

At the end of the life of a massive star,during the process of core collapse,the time taken from the start of collapse to the attainment of nuclear density is about

In a supernova process,after the initial contraction of the core,a powerful wave of pressure,like an unimaginably intense sound wave,expands.This process is called the

What is the difference between a Type Ia and Type II supernova?

The supergiant stars Betelgeuse and Rigel in the Orion region of the sky appear particularly bright because

X-ray bursters,like novae,are thought to involve close binaries whose stars are engaged in mass transfer.

A supergiant star can keep adding shells to its core "onion" structure until it produces uranium as a byproduct.

An old high-mass star can have a number of shells (hydrogen,helium,carbon,neon,oxygen,silicon)plus an iron core.Fusion generally takes place everywhere EXCEPT in the

What are the differences between electron degeneracy pressure and neutron degeneracy pressure?

What is the difference between a nova and an X-ray burster? All of the following answers are correct EXCEPT one.Which one is the exception?

Why is iron the last element produced before a star explodes as a supernova?

Why are black holes called black holes?

How are neutron stars and pulsars related?

Supermassive black holes are generally thought to develop in the relatively empty space between galaxies.

Where are core-collapse supernovae detected?

Which of the following will a high-mass star NOT do at or near the end of its life?

What is a singularity?

The majority of massive stars,at the point in time when they explode as supernovae,have become

The fastest known pulsar spins

If a star ended its main-sequence life with about 2.1 solar masses,the remnant would likely be a