WEGENER, CONTINENTAL DRIFT, AND PLATE TECTONICS Question Preview (ID: 36593)
Plate Tectonics.
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Which of the following choices best describes why Plate Tectonics, and Continental Drift occur on Earth?
a) The difference between High and Low Pressure Systems in the atmosphere on Earth affecting rock pressure.
b) Convection Currents in the mantle of the Earth.
c) Convection Currents in the crust of the Earth.
d) Gravitational forces between the Moon, Sun, and Earth.
What is the name for the chain of volcanoes on the edge of the Pacific plate?
a) The Volcano Chain
b) The Hawaii Chain
c) The Ring of Volcanoes
d) The Ring of Fire
All of the following pieces of evidence supported Alfred Wegener's theory of continental drift except _____________.
a) Continental puzzle
b) Matching fossils
c) Climates were unchanged
d) Homologous rock structures
How does the rift at the bottom of the Atlantic Ocean prove that the continents are drifting apart?
a) there are volcanoes along plate boundaries
b) there are earthquakes along mid-ocean ridges
c) the age of the crust is youngest along the divergent plate boundaries
d) fossil records are present on different continents
5 The boundaries between all of these plates are best described as the sites of
a) frequent crustal activity
b) continental boundaries
c) deep ocean depths
d) magnetic field reversals
One of Alfred Wegener’s problems in explaining his Theory of Continental Drift was —
a) his evidence was lacking
b) anti-German prejudice
c) his lack of scientific background
d) he lacked knowledge of the underlying mechanisms that drive it
The Earth’s mantle is made up of very hot material that rises to the top of the mantle, cools, then sinks, reheats, and rises again, constantly repeating the cycle. This action, which causes the Earth’s crust to move, is known as—
a) advection forces
b) magnetic fields
c) convection currents
d) hot spots
When the sea floor spreads apart, volcanoes and ridges are formed because —
a) A as the plates pull apart, magma moves to the surface, building ridges
b) underwater earthquakes lift the sea floor into long ridges
c) ocean water pushes down on the surrounding sea floor, pushing up ridges
d) sediments are deposited where the floor spreads, building ridges
The youngest rocks on the ocean floor are located ______________.
a) in the abyssal plain
b) at ocean trenches
c) at mid-ocean ridges
d) far from mid-ocean ridges
The plastic-like layer upon which the plates float is the _________________.
a) lithosphere
b) core
c) mantle
d) asthenosphere
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