Science Q2T1 2015 Part 1 Question Preview (ID: 27082)


Ch 6 Plate Tectonics. TEACHERS: click here for quick copy question ID numbers.

Many scientists rejected continental drift when it was first proposed because
a) studies of the ocean floor revealed its younger age
b) Wegener had no evidence to explain the existence of Pangaea
c) reversals in Earth's magnetic field had not yet occurred
d) Wegener could not explain how Earth's continents moved

At transform boundaries, two plates
a) pull away from each other
b) push against each other
c) scrape past each other
d) do not move in any direction

The Alps are forming as a result of the European and African plates pushing against each other. This is an example of
a) oceanic-oceanic subduction
b) oceanic-continental collision
c) oceanic-continental subduction
d) continental-continental collision

Scientists think that the main driving force of plate tectonics is
a) ridge push
b) slab pull
c) convection in the lithosphere
d) convection in the asthenosphere

Earth's magnetic reversals are recorded in
a) sea-floor rock
b) the mantle
c) deep-ocean trenches
d) the asthenosphere

Which of the following is also known as a spreading center?
a) transform boundary
b) divergent boundary
c) convergent boundary
d) convection boundary

Oceanic crust at a mid-ocean ridge is
a) younger than crust near a trench
b) older than crust near a trench
c) much older than continental crust
d) about the same age as continental crust

Which of these did Wegener use to support his theory of continental drift?
a) similar rocks and similar fossils on different continents
b) sea-floor spreading and similar rocks on different continents
c) convection currents in the asthenosphere and sea-floor spreading
d) fossils from ancient organisms and convection currents in the asthenosphere

Pangaea was a supercontinent that existed about 200 million years ago.
a) True
b) False
c)
d)

The transfer of heat by the movement of matter is called conduction.
a) True
b) False
c) .
d) .

What are Earth's layers from the center to the surface?
a) inner core, outer core, crust, mantle
b) crust, mantle, outer core, inner core
c) crust, outer core, mantle, inner core
d) inner core, outer core, mantle, crust

Which of these would make the best model of Earth's crust?
a) an egg's shell
b) an egg yolk
c) a peach pit
d) an orange slice

A tectonic plate is a slab of Earth's
a) asthenosphere and inner core
b) lithosphere and asthenosphere
c) crust and uppermost mantle
d) molten mantle and outer core

Mid-ocean ridges are sites where old crust sinks into the asthenosphere.
a) True
b) False
c) .
d) .

Patterns of ____________ recorded in ocean-floor rocks provide evidence of plate movement.
a) Rift Valley
b) Magnetic Reversal
c) Hot Spot
d) Mid-ocean Ridge

A spreading center is a ____________ on the ocean floor.
a) Continental Boundary
b) Convergent Boundary
c) Divergent Boundary
d) Transform Boundary

Plates move horizontally past each other along a ____________.
a) Continental Boundary
b) Convergent Boundary
c) Divergent Boundary
d) Transform Boundary

A ____________ can be used to track some plate movements because it stays in about the same place while the tectonic plate above it keeps moving.
a) Transform Boundary
b) Mid-ocean Ridge
c) Rift Valley
d) Hot Spot

An enormous gap that forms when new crust cools and moves apart is called a
a) Rift Valley
b) Divergent Boundary
c) Convergent Boundary
d) Continental Boundary

A ____________ occurs wherever two plates move toward each other.
a) Rift Valley
b) Divergent Boundary
c) Convergent Boundary
d) Continental Boundary

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