Transcript Sunken Millions

Sunken Earth
Changes
Christensen
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The Grand Canyon is a result of
two forces.
What are they?
A. Weathering and
B. Erosion and uplift
erosion
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C. Earthquakes and faulting D. Volcanoes and magma
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Which of these was probably a
quick change to Earth’s
surface?
A. Utah under warm seas
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C. Lake Bonneville,
water erosion
B. Volcanic activity
D.Sand dunes deposited
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At a local boat harbor, engineers occasionally
bring a crane in to dig out a deeper channel
for boats. How does knowledge about
deposition explain why the must do this?
A. Rocks in the harbor
can cause weathering
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C. Water coming into the
harbor deposits soil.
B. Plants should not be
growing near the water.
D. Many people visiting
can cause problems
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High mountains and low valleys
surround many areas in Utah. Which
of the following forms mountains
and valleys?
A. earthquake
B. weathering
C. gravity
D. flooding
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Landscape Arch in Arches National
Park had to be closed to visitors
hiking near the base. How would an
arch become dangerous?
A. The soil around the arch
became polluted
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C. Snakes are attracted to
some arches
B. Ice could fall off of it,
harming the visitor.
D. Erosion could make it
possible for it to collapse
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How does what science teaches us about
deposition help people who build homes
in the mountains?
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A.
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B. Wind can smooth and wear
Plants growing in cracks
can break up the rocks
away the rocks.
C. Planting grass and shrubs
will help hold soil in place
D.
Uplift can occur at any
cracks along the
mountains
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A result of water weathering is:
A. Mountains being formed
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C. Freshly dug holes in
B. Broken rocks, sharp
edges
D. smooth, rounded rocks
dirt
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In the past, scientists could not accurately
predict earth quakes and volcanoes.
How was technology helped improve
their predictions?
A. Plate movement is
measured
by volunteers.
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C. Fault lines are monitored
by video cameras
B. Seismographs are used
to detect movement in the
Earth.
D. There is no technology
that can help with
predictions
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Which type of erosion moves the most
Rock on Earth’s surface?
A. wind
B. gravity
C. glaciers
D. water
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How can knowing about deposition
help people after a rainstorm?
A.
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New rock is built up on B. Mud and dirt come down
a mountain.
the mountain
C. Large boulders fracture
and crack
D. Uplift occurs as
mountains become higher
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Underground salt deposits can be dissolved by ground
water and carried away. What may happen next?
A. The ground will collapse
B. A volcano may go off
C. An earthquake may
happen
D. The ground may form a
dome
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What forms mountains?
A. volcanoes, uplift,
earthquakes
B. Sand dunes, earthquakes
C. Shore lines, volcanoes,
uplift
D. geysers, uplift
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Justin went to his favorite fishing place on vacation
one summer. When he got there, it all changed.
Why?
A. Erosion by rivers can
change their course
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B. Wind can blow rocks into
rivers
C. He must have forgotten D. Ice in the winter can cause
where it was
fish to die
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Many valleys in Northern Utah show a U-shape that
shows a glacier carved them. How long does it take a
glacier to carve a valley?
A. Less than a year
B. 10 to 20 years
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C. Thousands of years
D. A century or more
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It has taken million of years for the Grand Canyon to
build up and break down. Where would the oldest rocks
of this canyon most likely be?
A. Top of the canyon
B. Bottom of the canyon
C. Middle of the canyon
D. Eroded away
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Which example best shows how understanding science
affects life?
B. A twelve- year old read the
A.A storekeeper orders a lot of
food so people can prepare for newspaper so she can be aware
earthquakes
of volcanoes around the world
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C. A ten -year old girl saved many
D. A person with a weather station
Lives by recognizing the signs
Of a tsunami
can watch and prepare for
earthquakes
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What scientific knowledge helps people predict what
might happen after a forest fire has burned trees and
plants on a mountain?
A.
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An arch could form as B. Mudslides and landslides
rock wears away.
could occur
C. A volcano could erupt D. Uplift could occur from the
and burn more trees
earthquakes and tremors
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What causes earthquakes, volcanoes and uplift of
Earth’s surface?
Movement of Earth’s
crust
B. Explosions deep with
C. The pull of gravity from
the Moon and Sun
D. New rock forming on
Earth’s surface
A.
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Earth’s core
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The Colorado River has helped to form the Grand
Canyon. Which natural process does the river
most directly cause?
A. uplift
B. earthquakes
C. faulting
D. erosion
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What would Earth’s surface look like if there were
No mountain uplift or erosion?
A. Completely flat
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C. Completely covered with
mountains
B. Like it did when Earth
was formed
D. Like the Sun
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sunken millions.