Stars: Astronomy Club

First stars are made of:

• Argon and Bromine

• Nickel and Iron

• Unknown elements

• Hydrogen and Helium

Which isotope(s) of Hydrogen fuse in the sun's core?

• Deuterium and Tritium

• Hydrogen 5

• Terbium and Lanthanum

• Hydrogen 7

The first stars are also known as

(a)  

A molecular cloud that collapses into a dense ball because of gravity is called:

• Protostar

• Prestellar core

• Singularity

• Tauri Star

Energy from radiation zones is transferred outwards through

• Protons

• Electrons

In the corona layer of a star, a halo of hot plasma is formed that extends ______ kilometers into space

• Millions

• Hundreds of Thousands

• a few meters

• Hundreds

Sirius compared to our sun has how much more mass?

• 0.5 M vs 4 M

• M vs 300 M

• 1 billion kg vs 1.76 billion kg

• M vs 2.02 M

The most common type of stars in our universe are _____

• White Dwarf

• Giants

• Orange Dwarf

• Red Dwarf

Stars keep fusing elements until it reaches which element?

• Carbon

• Hydrogen

• Iron

• Helium

A rough measure of a neutron's star density is teaspoons weighing:

• Trillions of kilograms

• Millions of kilograms

• Billions of tons

• Hundreds of thousands of tons