How Stars Form
The space around stars contain what?
gas and dust
Stars spend about ___ % of their lives on the main sequence.
90
How much bigger than the sun can these stars be?
8 times
What do high mass stars turn into?
Red Supergiants
What are maria?
low, flat plains formed by ancient lava flows
A nebula is a large cloud of gas and dust spread out over a large volume of _____
space
True or False? A star's mass determines the star's place on the main sequence and how long it will stay there.
True
What is the next stage in this life cycle?
True or False? A high mass star dies slowly
False
What is a crater?
A crater is a round depression in the surface
____ form in the densest regions of nebulas
stars
High mass stars are what color?
Blue
When a red giant collapses only its core is left. What is the core called?
White Dwarf
When a Red Supergiant collapses and a huge explosion occurs it is called what?
True or False? There are mountains on the moon.
True
gravity
True or False? Typically, Blue stars burn 100,000 times brighter that the sun.
False; 300,000
When a white dwarf loses enough heat to glow in visible light it is called what?
Black Dwarf
Supernovas produce enough energy to create elements heavier than ____
iron
The moon is geologically ____
dead
True or False? Pressure from fusion doesn't support the star against the tremendous inward pull of gravity.
false
What color are the coolest stars?
Red
The glowing gas around a dying star is called what?
A planetary nebula
A neutron star is so _____ that a spoonful of it would weigh billions of tons on Earth.
dense
Maria cover ____% of the moon's surface
15