Transcript Evidence from the Sea Floor*41 - Mrs. Marcello Science

Evidence from the Sea Floor…41
Evidence
Description
Mid Ocean Ridge
Evidence
Description
Sea Floor
Spreading
Molten rock rises through the cracks and
make new ocean crust
Spreading the continents apart
Age of Sea
Floor
Younger rock is closer to the midocean ridge; Older rock is farther
away.
Sea Floor Moves=Continents Move
Why isn’t the Earth getting any
larger?
Old crust is being destroyed at the
same speed new crust is made.
Ocean
Trenches