Gravity
For any two objects, _____ pulls them down or attract.
gravity
A ball of hot glowing gas that produces its own light and energy.
stars
When two plates separate or push away.
divergent
The outermost layer and the thinnest layer of earth on which life exists.
crust
Stars orbit in random directions creating a round mass or oval shape.
irregular galaxy
____ always stays the same, while weight changes with gravity.
Mass
______ is how bright a star appears from Earth.
When two plates slide past each other
transform
Weak layer under the crust
upper mantle
A type of atom that retains all the properties in an element.
isotopes
An object in motion stays in motion unless acted upon force.
inertia
_________ is how bright a star appears 32.6 light years away.
luminosity
What are the three types of rock?
Sedimentary, igneous, and metamorphic
Solid, outer part of Earth and divides into plate tectonics.
lithosphere
The law in geology determines the age of how old or young a rock is.
The law of superposition
Theorized the same force that kept the moon in place.
The distance light travels in one year
light year
Rocks that change from heat, pressure, and chemical activity.
metamorphic
The inner core and the outer core.
This method is used to date and compare the decay.
radioactive dating
Sir Isaac Newton developed how many laws of motion?
3
Spiral, elliptical, irregular
He theorized that the Super Continent eventually drifted away into 8 separate continents. What is his name?
Alfred Wegener
Known as the weak ball in Greek.
asthenosphere
What is the name of our neighbor galaxy?
Andromeda