Clear as Black and White
What are some of the factors that might unnecessarily exclude people from learning about or working in the geosciences? Culture? Ethnicity? Sex? Language? A disability? Where they live? How much they earn? Something else?
Geologic Maps and Groundwater
You can find out a great deal of information from geologic maps — from the types of rocks that make up a rock unit to the age of those rocks and the angle at which the rock bed is tilted. By identifying fractures and fracture zones in rock, geologic maps can even tell you where known faults are located.
Groundwater on the Move
Karst Topography Model
Did you know that a quarter of the world’s population gets drinking water from karst aquifers? Karst is the type of landscape that forms by dissolution of carbonate rocks (limestone, dolomite) or other highly soluble rocks such as evaporates (gypsum and rock salt). Karst includes caves, sinkholes, sinking streams, and springs. Karst environments are vulnerable to groundwater contamination. Understanding groundwater flow in karst terrains is critical for safe drinking water.
Land and People: Finding a Balance
Modeling Earth’s Water — Fresh vs. Salty
We drink water every day — we can’t live without it! About 70 percent of Earth’s surface is covered by water, but how much of Earth’s water is actually drinkable? In other words, how much is liquid freshwater — not salty or frozen?
• Globe or world map
• Water cycle diagram
• 100 gummy bears
• Plastic knife or scissors
• Computer with internet access
Wetland in a Water Bottle
Wetlands are places where the water table is usually at or near the surface or the land is covered by water or saturated at least some of the time. They include mangroves, marshes, swamps, forested wetlands, and bogs and are important nurseries for young birds, fish, amphibians, and other aquatic plants and animals. In addition to providing habitat for wildlife, wetlands offer storm protection, improve water quality, support aquatic species, and provide recreational opportunities.