Idaho Facts

Which explanation is defensible for an investigation of geomorphic development of hells canyon?

• The Snake River Plain is an ocean coral reef.
• All Idaho canyons were excavated by glaciers last year.
• Volcanic deposition and river erosion have both shaped parts of Idaho over geological time.
• Volcanic rock forms only from river mud.

When evaluating relative roles of volcanism and erosion in idaho landscapes, which interpretation is most accurate?

• Volcanic rock forms only from river mud.
• All Idaho canyons were excavated by glaciers last year.
• The Snake River Plain is an ocean coral reef.
• Volcanic deposition and river erosion have both shaped parts of Idaho over geological time.

How should a student assess a claim involving the snake river plain’s geological development in Idaho?

• Volcanic deposition and river erosion have both shaped parts of Idaho over geological time.
• The Snake River Plain is an ocean coral reef.
• Volcanic rock forms only from river mud.
• All Idaho canyons were excavated by glaciers last year.

In studying the influence of rain shadows on idaho agriculture, which conclusion can be justified?

• Mountain snowpack cannot affect downstream water supply.
• All Idaho locations receive identical rainfall.
• Rain shadows increase precipitation uniformly everywhere.
• Elevation, topography, and regional moisture patterns help produce different local climates.

What does the evidence suggest when considering comparing climate across the idaho panhandle and snake river plain in Idaho?

• Northern Idaho is narrower and often forested; southern Idaho includes broad valleys and the Snake River Plain.
• Every region has identical elevation and climate.
• Southern Idaho consists entirely of ocean islands.
• The Panhandle is a tropical coastline.

Which explanation is defensible for an investigation of snowpack trends as a water-security issue?

• River systems cannot cross state boundaries.
• Seasonal river flows and managed water supplies support farms, energy, habitats, and communities.
• Snowmelt has no connection to summer streamflow.
• Irrigation eliminates the need to manage water shortages.

When evaluating reservoir storage and seasonal irrigation demand, which interpretation is most accurate?

• Snowmelt has no connection to summer streamflow.
• Irrigation eliminates the need to manage water shortages.
• Seasonal river flows and managed water supplies support farms, energy, habitats, and communities.
• River systems cannot cross state boundaries.

When evaluating evaluating idaho’s geographic position in intermountain trade routes, which interpretation is most accurate?

• Physical terrain and the way it is measured affect settlement, travel, and comparisons.
• Rocky landscapes are always more densely settled than cities.
• All square-mile measures include exactly the same features.
• Elevation has no effect on transportation costs.