In school, you usually learn that the three main layers of the earth are the crust, mantle, and core. Geologists call these compositional layers, because the layers are defined by the materials they are made of. However, geologists also think about how different layers of the earth move: for example, do they flow easily? Are […]
Category: Earth Science
Glaciers make a big mark on the landscapes beneath and around them. Even thousands of years after a glacier disappears, you can still find evidence of its presence in the glacial landforms left behind!
Water. It covers over 70% of the earth’s surface and even makes up about 60% of the human body. But did you know that water has some incredible properties that make it different from other liquids? This is due to water molecules’ unique molecular structure. If you are studying water in your classroom, here are a few fun water molecule activities to help your students discover some of water molecules’ weirder properties.
Before we can learn about groundwater-surface water interactions, we must understand the water table. The water table is the level at which the pore spaces are filled entirely with water. The water table is not a flat plain, but rather, a three-dimensional surface.
Hydrologists collect stream measurements to ensure we are not using our water resources too quickly or in unsustainable ways. With a few household items, you can collect river measurements too!
Different rivers naturally have different planforms – and that’s a good thing! You will find healthy streams and rivers with a variety of different natural planforms – no one planform is necessarily better than the others. What is best is for a river to be in as close to its natural state as reasonably possible.
A glacier is a large, dense ice mass made from compacted snow that slowly moves under its own weight over a long period of time. Unlike seasonal snowpack, glacial ice does not fully melt in summer. Although glaciers move slowly, often just centimeters per day, they may cover great distances over many years. There are […]
About common water features Before diving into definitions and examples of some common water features, let us ask: “what is a water feature?” Water features are any waterbody or waterway found on the earth’s surface! Water features come in a wide variety of shapes and sizes! For example, some water features are lotic (flowing, like […]
What is snow hydrology? Snow hydrology is the study of snow’s role in the water cycle. Snow hydrologists study snowfall, melting, and everything that happens to snow in between! Many snow hydrologists are interested in the ways snow impacts our water resources. They may use data to make predictions about the water supply. Why is […]
In this post, you’ll learn about ecological disturbance and succession, starting with definitions and examples of disturbances. We will cover the differences between primary succession vs. secondary succession, as well as the steps of the ecological succession process. Finally, you’ll read about why disturbances like wildfire can be important and natural processes in ecosystems! What […]