MEA 101 EXAM #1 UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Question:
What is a scientific theory?
Answer:
One of the most reliable forms of scientific explanation
Question:
Horizontal strata (layers) extend laterally until they thin to zero thickness
(pinch out) at the edge of their basin of deposition.
Answer:
Law
Question:
Changes in the Earth's crust during geological history have resulted from the
action of continuous and uniform processes that we can observe today.
Answer:
Theory
Question:
The Younger Dryas cold period 12,000 years ago was caused by a meteorite
impact.
Answer:
Hypothesis
Question:
The structure of the Earth's crust results from the interaction of rigid
lithosphere pieces that moves slowly over the underlying mantle.
Answer:
Theory
Question:
Sediment that is deposited into a basin will form sedimentary layers that are
initially deposited horizontally.
Answer:
Law
Question:
What was Alfred Wegener's main hypothesis?
Answer:
Earth's landmasses used to form a single supercontinent (Pangea)
Question:
Which observations did Wegener NOT use to support his continental drift
hypothesis?
Answer:
. Patterns of earthquake locations within ocean basins
, Question:
A scientific hypothesis offers a well-defined natural cause to explain a natural
phenomenon. At the time, Wegner's hypothesis was not widely accepted. Why
not?
Answer:
Because he couldn't offer an explanation of how the continents could have
moved
Question:
What defines the earth's insides?
Answer:
Thin crust, big core
Question:
What is the lithosphere?
Answer:
crust and upper mantle
Question:
As you move from a continent toward a mid-ocean ridge from either side, the
age of the seafloor crust gets _________ and the thickness of the overlying
sediment gets _______.
Answer:
Younger; Thinner
Question:
Divergent plate boundaries are typically characterized by
Answer:
oceanic ridges
Question:
Earthquakes are associated with divergent plate boundaries
Answer:
True
Question:
Volcanoes are associated with convergent plate boundaries
Answer:
True
Question:
Most of the world's active volcanoes are found along divergent plate
boundaries
Answer:
False
Question:
What is the source of magma that forms at oceanic ridges?
Answer:
melting of asthenosphere
Question:
Divergent plate boundaries intially form by breaking apart __________
CORRECT ANSWERS
Question:
What is a scientific theory?
Answer:
One of the most reliable forms of scientific explanation
Question:
Horizontal strata (layers) extend laterally until they thin to zero thickness
(pinch out) at the edge of their basin of deposition.
Answer:
Law
Question:
Changes in the Earth's crust during geological history have resulted from the
action of continuous and uniform processes that we can observe today.
Answer:
Theory
Question:
The Younger Dryas cold period 12,000 years ago was caused by a meteorite
impact.
Answer:
Hypothesis
Question:
The structure of the Earth's crust results from the interaction of rigid
lithosphere pieces that moves slowly over the underlying mantle.
Answer:
Theory
Question:
Sediment that is deposited into a basin will form sedimentary layers that are
initially deposited horizontally.
Answer:
Law
Question:
What was Alfred Wegener's main hypothesis?
Answer:
Earth's landmasses used to form a single supercontinent (Pangea)
Question:
Which observations did Wegener NOT use to support his continental drift
hypothesis?
Answer:
. Patterns of earthquake locations within ocean basins
, Question:
A scientific hypothesis offers a well-defined natural cause to explain a natural
phenomenon. At the time, Wegner's hypothesis was not widely accepted. Why
not?
Answer:
Because he couldn't offer an explanation of how the continents could have
moved
Question:
What defines the earth's insides?
Answer:
Thin crust, big core
Question:
What is the lithosphere?
Answer:
crust and upper mantle
Question:
As you move from a continent toward a mid-ocean ridge from either side, the
age of the seafloor crust gets _________ and the thickness of the overlying
sediment gets _______.
Answer:
Younger; Thinner
Question:
Divergent plate boundaries are typically characterized by
Answer:
oceanic ridges
Question:
Earthquakes are associated with divergent plate boundaries
Answer:
True
Question:
Volcanoes are associated with convergent plate boundaries
Answer:
True
Question:
Most of the world's active volcanoes are found along divergent plate
boundaries
Answer:
False
Question:
What is the source of magma that forms at oceanic ridges?
Answer:
melting of asthenosphere
Question:
Divergent plate boundaries intially form by breaking apart __________
