Physical Science Midterm

The most accepted theory about the formation of the universe which explains that it continues to expand.

• Big Bang Theory

• Inflation Theory

• String Theory

• Steady State Theory

The process of forming elements is known as:

• Generation

• Genesis

• Nucleosynthesis

• Synthesis

When protons and neutrons collide and combine they form _________, it is an isotope of Hydrogen.

• Tritium

• Triton

• Deuterium

• Helium

The universe is hotter _______ billion years ago.

• 13.1

• 13.5

• 13.8

• 13.9

When the particles have too much energy and the temperature of the universe is too hot, what happened to the particles when they collide?

• They just got destroyed when they collide.

• They will just bounce upon collision.

• New elements were made when they collide.

• None of the above.

It is where the stars are born. It is a huge clump of gas and dust particles.

• Stellar Nucleus

• Stellar Nebula

• Stellar Fusion

• Stellar Nucleosynthesis

When a star has fused all the hydrogen in its core, its nuclear radiation output ceases.

• Red Giant      

• White Dwarf

• Black Dwarf

• Super Red Giant

For stars with a mass 8-9 times that of the sun, the core temperatures become so high that nuclear fusion can occur even after the helium is exhausted.

• Red Giant  

• White Dwarf   

• Black Dwarf

• Super Red Giant

The mass of an entire stellar core is condensed into a body roughly the size of the Earth.

• Red Giant      

• White Dwarf   

• Black Dwarf    

• Super Red Giant

It is the final stage in the life of a low to medium mass star.  They formed due to the gradual cooling and dimming as they burn their remaining fuel.

• Red Giant

• White Dwarf   

• Black Dwarf    

• Super Red Giant