theory of plate tectonics

What is a convergent plate boundary?

• a flipping plate

• plates that go towards each other and collide

• plates that grind past each other

• plates that collide to form mountains

Plates that move away from each other are called

• divergent plate boundary

• a faulty plate boundary

• convergent plate boundary

• Transform plate boundary

where do most earthquakes happen on the earth's surface

• where convergent, divergent, transform boundaries happen

• where convergent and divergent boundaries happen

• where convection in atmospheric gases happen

• where divergent and transform boundaries happen

Tectonic plates have constant movement

• true

• False

the lithosphere is

• the upper mantle and the earth's crust

• the upper and lower mantle

• earth's core

• the earth's crust

what would happen if the only plate boundary happening on earth is convergent boundary?

• the earth would shrink and go back to being pangea

• the earth would expand

• the earth will completely flood due to the expansion of the oceans

• the earth will shrink making it uninhabitable due to dinosaurs taking over

what is a subduction zone

• the area in which one ocean plate goes into the mantle beneath a second plate

• when magma flows out of the upper mantle causing the ocean floor to expand

• a constructive plate

• the zone where the water evaporates from the ocean

Divergent P.B are also called

• spreading centers and constructive plates

• destructive plates

• upwarping plates

• peanut butter (P.B)

Volcanic island arcs form as

• magma flows out of a volcano on land forming another volcano beside it

• volcanoes form on land

• volcanoes emerge from the sea

• ashes from the eruption create the illusion of a volcano

Upwarping is

• the rising of magma from the lower mantle to the upper mantle

• the rising of magma from the crust to the mantle

• another name for the theory of tectonic plates

• the rising of magma from the upper mantle to the crust