Star Semester Final

What is a star?

• A cloud of particles held together by its own gravity

• A ball of gas

• A large sphere of hot gas that makes its own light

• A nuclear explosion caused by hydrogen on another planet

Stars are made mostly of which two elements?

• Hydrogen and Helium

• Hydrogen and Oxygen

• Nitrogen and Helium

• Nitrogen and Oxygen

An early state in the formation of a star before nuclear synthesis begins is called a(n)

• Black hole

• Supernova

• Neutron Star

• Protostar

A big cloud of dust and gas where all stars begin their life cycle is called a

• Solar System

• Nebula

• Galaxy

• Universe

What process takes place in stars which combine lighter elements into heavier ones?

• Nuclear Fission

• Conjugation

• Nuclear Fusion

• Attraction

Which stage occurs when a massive star explodes and releases a lot of energy?

• Red Supergiant

• Supernova

• Black Hole

• Main Sequence

Which of the following is the correct order of the life cycle of our sun?

• Main Sequence, red giant, white dwarf

• Main sequence, white dwarf, red giant

• White dwarf, main sequence, red giant

• Main sequence, red giant, supernova

What color are the hottest stars?

• Red

• Yellow

• White

• Blue

In about 5 billion years, our sun will grow 100 times its size into its next stage called a

• Red giant

• Red dwarf

• Brown dwarf

• Red super giant

What is the heaviest element that can be created inside a star?

• Silver

• Gold

• Carbon

• Iron