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It has taken millions of years for the Grand Canyon to build up and break down. Where would the oldest rocks of the canyon most likely be?
Erosion could make it possible for it to collapse
so scientists can warn people to evacuate the area
Ice freezes in the rock at night, cracking them
weathering and erosion
volcanoes
over 5,000 years
earthquakes and volcanoes
bottom of canyon
Landscape Arch in Arches National Park had to be closed to visitors hiking near the base. How could an arch become dangerous?
Erosion could make it possible for it to collapse
so scientists can warn people to evacuate the area
Ice freezes in the rock at night, cracking them
weathering and erosion
volcanoes
over 5,000 years
earthquakes and volcanoes
bottom of canyon
Why would it be helpful to the general public for scientists to predict earthquakes?
Erosion could make it possible for it to collapse
so scientists can warn people to evacuate the area
Ice freezes in the rock at night, cracking them
weathering and erosion
volcanoes
over 5,000 years
earthquakes and volcanoes
bottom of canyon
How long has it taken the Grand Canyon to form?
Erosion could make it possible for it to collapse
so scientists can warn people to evacuate the area
Ice freezes in the rock at night, cracking them
weathering and erosion
volcanoes
over 5,000 years
earthquakes and volcanoes
bottom of canyon
A seismograph is a device used to measure wave movement through Earth's curst. What can it help predict?
Erosion could make it possible for it to collapse
so scientists can warn people to evacuate the area
Ice freezes in the rock at night, cracking them
weathering and erosion
volcanoes
over 5,000 years
earthquakes and volcanoes
bottom of canyon
Which best completes this chart? 1. Uplift 2. Earthquakes 3.
Erosion could make it possible for it to collapse
so scientists can warn people to evacuate the area
Ice freezes in the rock at night, cracking them
weathering and erosion
volcanoes
over 5,000 years
earthquakes and volcanoes
bottom of canyon
In the spring, rocks often fall onto mountan roads. Why?
Erosion could make it possible for it to collapse
so scientists can warn people to evacuate the area
Ice freezes in the rock at night, cracking them
weathering and erosion
volcanoes
over 5,000 years
earthquakes and volcanoes
bottom of canyon
The Grand Canyon is a result of two forces. What are they?
Erosion could make it possible for it to collapse
so scientists can warn people to evacuate the area
Ice freezes in the rock at night, cracking them
weathering and erosion
volcanoes
over 5,000 years
earthquakes and volcanoes
bottom of canyon
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