Space
How old is Earth
4.6 billion years old
What are the characteristics of a metamorphic rock?
Banding/foliation
What happens on an equinox?
length of day and night is equal and sun rises directly east and sets directly in the west
what happens at a convergent boundary
what are the lines drawn on field maps
isolines
which is older, the solar system or Earth
they are the same age
What are the characteristics of a sedimentary rock?
fossils and round cemented grains
what are the two equinoxes
vernal equinox and the autumnal equinox
what happens at a transform boundary
plates slide past each other
what is a region with a measurable quantity at every location called
field
when objects are moving away in space, they are moving towards the _____ end of the spectrum
red
What are the characteristics of an igneous rock?
glassy, vesicular, angular inter-grown crystals
what are the two solstices
summer solstice and the winter solstice
what happens at a divergent boundary
plates diverge
a map that shows elevation
topographic map
The force that causes objects to move in space is __
gravity
What happens to the sediment when it gets eroded?
It gets smaller and more round
when do direct rays of sun hit the equator
on the equinoxes
what causes the plates to move
convection
oblate spheroid
How old is the universe
9.1 billion years old
Why does limestone respond to acids so quickly?
It's made of calcite which reacts with acids
when does the sun rise directly in the east and sets directly in the west
the equinoxes
what happens when a divergent boundary is on the ocean floor?
a mid-ocean ridge is formed
What is the proof that Earth is not flat
ships mast
altitude of Polaris
Earth's shadow
photos of Earth from space