life cycle of stars
Most stars are?
Main sequence
How Big is a Solar Mass
The size of the sun
_______ are the preserved remains or traces of living things.
Fossils
Energy is generated in the cores of stars by fusing ___
hydrogen into helium
Age of a rock compared to the ages of other rocks, such as "this rock is older than the rest in the area
Relative Age
If our Sun died out, what would it become?
white dwarf
What Are The Two Main Classes of Black holes
tellar and Supermassive
Fossils can provide evidence of how life has changed over time, how Earth's surface has changed, and clues about what past environments were like.
True or false?
true
The expansion created by the heat of fusion is usually balanced by a star's gravity, creating ___
an equilibrium
the number of years that have passed since the rock was formed, such as, "this basalt layer is 1000 years old +/- 20 years".
absolute age
What type of stars are the hottest?
blue
he Closets Black Hole From Earth Is __________ Light Years away.
27,000
In what type of rock would you typically find fossils?
Sedimentary
In gas giants, like Jupiter, the force of gravity is balanced by ___
simple gas pressure
In undisturbed horizontal layers of sedimentary rock, the oldest rocks are found at the bottom.
law of superposition
What is the main factor that determines what a star will become?
mass
How Does A Black Hole Distort Light
It Makes A Ring Of Light Around It's self
A _______ is a hollow area in sediment in the shape of an organism or part of an organism.
mold
The minimum mass for fusing hydrogen, and becoming a star, is roughly ___
75 times the mass of Jupiter
A gap in the geologic record due to erosion. Where new rock layers meet a much older rock surface beneath them.
unconformity
Our solar system is part of this galaxy.
milky way
When Your Body Goes Inside A Black Hole The Stretching effect is called what
spaghettification
A _______ is a solid copy of the shape of an organism.
cast
Stars form from collapsing gas clouds, just like the Sun did ___ years ago
4.6 billion
Lava that hardens on the Earth's surface, forming igneous rock is an example of
extrusion