0519 star & meteor

What are stars primarily made of?

• Rock and metal

• Ice and dust

• Hot gases like hydrogen and helium

• Liquid water

How do stars produce light and heat?

• They burn fuel like wood.

• Through a process called nuclear fusion.

• By reflecting light from the Sun.

• By chemical reactions like rusting.

What is a "light-year" a measure of?

• Time

• Brightness

• Distance

• Temperature

If a star has a smaller magnitude number, what does that mean?

• It is dimmer.

• It is further away.

• It is smaller in size.

• It is brighter.

What does the color of a star tell us most directly?

• Its age

• Its distance from Earth

• Its temperature

• Its size

Which of these spectral classes represents the hottest stars?

• M

• G (like our Sun)

• O

• K

What is a nebula?

• A dying star

• A cloud of gas and dust where stars are born

• A small, rocky planet

• A type of galaxy

What is the longest phase in a star's life cycle, where it fuses hydrogen into helium?

• Protostar

• Red Giant

• Main Sequence

• White Dwarf

What will our Sun become after its red giant phase?

• A black hole

• A supernova

• A planetary nebula and then a white dwarf

• A neutron star

What is a supernova?

• The birth of a new star

• A very calm and quiet star

• The explosive death of a massive star

• A small comet