According to Wegener’s hypothesis of continental drift,
the continents were once joined together in a single landmass.
A place where two plates collide is called?
convergent boundary
The process of _________________________ continually adds new crust to the ocean floor along both sides of the mid-ocean ridge.
sea floor spreading
The transfer of energy through light rays is called
Radiation
The geological theory that states that pieces of Earth’s lithosphere are in constant, slow motion is the theory of
plate tectonics
Along a _______________ boundary, two plates slip past each other, moving in opposite directions.
transform
Old oceanic crust is more dense than new oceanic crust because it is
cool
Particles of hot soup rise slowly in a pot simmering on a stove. As the hot soup nears the surface, it begins to cool. The cooler soup sinks, forming a constant movement of soup that moves energy toward the surface of the pot. This constant movement of the soup in the pot is called a(n)
Convection current
The hypothesis of _________________________ was that all the continents once were joined as a single supercontinent and have since drifted apart.
continental drift
A collision between two pieces of continental crust at a converging boundary produces a
mountain range
Oceanic crust near the mid-ocean ridge is (older or younger) than oceanic crust farther away from the ridge.
younger
If subduction occurs faster than oceanic crust can be created, an ocean will
shrink
Volcanoes that form along a mid-ocean ridge occur at a(n) _______________ plate boundary.
diverging
The collision of two oceanic plates will form a deep ocean ________________.
trench
In sea-floor spreading, Where does molten material rise from the mantle and erupt?
along mid ocean ridges
When continental plates pull apart at a divergent boundary on land, a(n) ____________________ forms.
rift valley