10 Geology in the Modern World Free Online FlashCards

What does a geologic map show?

A geologic map shows the distribution and characteristics of surface materials and bedrock.

How does risk differ from a hazard?

A hazard is a potentially damaging Earth process. Risk also depends on who or what is exposed and how vulnerable they are.

What determines whether a geological substance is a resource?

A resource depends on amount, quality, accessibility, technology, economics, and environmental effects—not simply on a substance being present in rock.

Why compare paleoclimate records with modern observations?

Comparing paleoclimate records with modern observations helps scientists understand natural variability and the longer-term context of environmental change.

How can loose, water-saturated sediment affect earthquake impacts?

Loose, water-saturated sediment can amplify earthquake shaking or liquefy.

What can paleoclimate archives reveal?

Dated volcanic deposits, flood sediments, fossils, ice cores, and lake or ocean sediments preserve clues to past events and environmental conditions.

What can earthquake evidence assess, and what can it not predict?

Earthquake evidence supports probability-based hazard assessments and building standards, but cannot predict the exact time, place, and magnitude of a future earthquake.

How do volcanic history and monitoring inform preparedness?

Volcanic deposits and landforms record where hazards traveled; monitoring earthquakes, ground deformation, and gases supports hazard maps, warnings, and evacuation plans.

What factors influence slope stability and failure?

Rock type, slope angle, fractures, water, and vegetation affect stability; heavy rain, earthquakes, or wildfire can trigger slope failure.

What limitation should be kept in mind when using a hazard map?

A hazard map estimates where a process may occur; it does not guarantee whether a particular site will or will not be affected.

Why can permeable sand and gravel pose a groundwater-protection challenge?

Permeable sand and gravel can store useful groundwater but also allow contaminants to travel quickly from the surface.

How can groundwater mapping support land-use planning?

Mapping aquifer materials and groundwater flow helps planners protect water supplies and assess where particular land uses are suitable.