University Corporation for Atmospheric Research
Ucar: The Sun's Chromosphere (Lower Atmosphere)
Discover interesting facts about the lower region of the Sun's atmosphere called the chromosphere.
University Corporation for Atmospheric Research
Ucar: The Carbon Cycle
A comprehensive introduction to the carbon cycle. The cycle of atoms between living and non-living things is known as a biogeochemical cycle. The most common of these are the carbon and nitrogen cycles.
University Corporation for Atmospheric Research
Ucar: Coronal Loops in the Sun's Atmosphere
A general review of coronal loops found in the solar atmosphere.
University Corporation for Atmospheric Research
Ucar: Oxygen
Article provides an overview of the chemical element, Oxygen.
University Corporation for Atmospheric Research
Ucar: Solar Prominences
A brief explanation of solar prominences.
University Corporation for Atmospheric Research
Ucar: Acid Rain
Brief article explores acid rain, a general term used to describe different kinds of acidic air pollution.
University Corporation for Atmospheric Research
Ucar: Nitrogen
Facts about the chemical element, nitrogen found in the Earth's atmosphere.
University Corporation for Atmospheric Research
Ucar: Methane
Brief article explores methane, a flammable gas found in the Earth's atmosphere.
University Corporation for Atmospheric Research
Ucar: Plasma
Article explores plasma, an electrically charged gas found in electrical lights and nature.
University Corporation for Atmospheric Research
Ucar: Exosphere Overview
Overview of the Exosphere, the uppermost region of Earth's atmosphere.
University Corporation for Atmospheric Research
Ucar: The Mesosphere Overview
Overview of the Mesosphere, a layer of the Earth's atmosphere.
University Corporation for Atmospheric Research
Ucar: The Troposphere Overview
Overview of the Troposphere, the lowest layer of Earth's atmosphere.
University Corporation for Atmospheric Research
Ucar: Aerosols: Tiny Particulates in the Air
There are billions of tiny bits of solid and liquid floating in the atmosphere. Learn about those tiny floating particles called aerosols or particulates.
University Corporation for Atmospheric Research
Ucar: Sort the Sun by Temperature
Sort features of the sun based on temperature or solar minimum and maximum.
University Corporation for Atmospheric Research
Ucar: Sea Ice and Heat: A Vicious Cycle
Melting sea ice doesn't cause sea level to rise because the ice is already in the ocean, but it does cause other changes to the planet. When sea ice melts, more sunlight is absorbed by the Earth, which causes more warming. It's a vicious...
University Corporation for Atmospheric Research
Ucar: The Photosphere: The "Surface" of the Sun
The photosphere is the visible "surface" of the Sun. View pictures and read a description of the photosphere in this article.
University Corporation for Atmospheric Research
Ucar: Coronal Holes in the Sun's Atmosphere
Coronal holes are areas in the Sun's atmosphere that appear dark in X-ray and ultraviolet images of the Sun. View a picture and read a description of coronal holes in this article.
University Corporation for Atmospheric Research
Ucar: Coronal Mass Ejection (Cme)
A Coronal Mass Ejection (CME) is a powerful, explosive "storm" from the Sun. CMEs hurl millions of tons of particle radiation outward into space.
University Corporation for Atmospheric Research
Ucar: Weather in the News
In this activity, students will compare stories about a weather event from different media sources and different perspectives.
University Corporation for Atmospheric Research
Ucar: Little Ice Age: Where Have All the Glaciers Gone?
In this activity, students examine images of alpine glaciers to develop an under-standing of how glaciers respond to climate change.
University Corporation for Atmospheric Research
Ucar: Compare Solar Eclipse Photos
Compares photos of different solar eclipses side-by-side.
University Corporation for Atmospheric Research
Ucar: Why Earth Is Warming
Over more than a century, the global average temperature warmed 1.5F (0.8C). Learn the science of why this has happened, and what the future holds.
University Corporation for Atmospheric Research
Ucar: Why Does Climate Change?
Factors that have the power to change global climate can be natural, like volcanic eruptions and changes in solar energy, or caused by humans, like the addition of greenhouse gases to the atmosphere.
University Corporation for Atmospheric Research
Ucar: El Nino Southern Oscillation
Learn how the El Nino-Southern Oscillation (ENSO) climate fluctuation affects weather around the world.