Unit 3 - Stars

What color of star is the coolest?

• Red
• Yellow
• Blue
• White

What is the name of the gas/dust clouds where all stars form?

• Nebulas
• Protostars 
• Supernova
• Neutron Star

The color of a star tells us its

• magnitude
• temperature
• size
• age

The life cycles of stars are determined by their:

• mass (size)
• color
• distance from Earth
• luminosity

Most stars are made of which gases?

• Hydrogen only
• Hydrogen and Lithium
• Hydrogen and Sodium
• Hydrogen and Helium

Our sun is currently in what star stage?

• Protostar
• Nebula
• Main Sequence
• Red Giant

Which of the following is NOT a characteristic used to classify stars?

• Color
• Temperature
• Size
• Shape

All stars begin their life in a

• Main Sequence

• Nebula

• Protostar

• Black Dwarf

The reaction in the core of a star that makes them shine is called

• nuclear fission

• supernova

• hydrostatic equilibrium

• nuclear fusion

Which of the following will give the best indication of a star's temperature?

• the distance of the star

• the radius of the star

• the color of the star

• the age of the star