National Earth Science Teachers Association
Nesta: Windows to the Universe: Iron Ore Deposits
This concise article, which is provided by Windows to the Universe, explains how iron and iron ore were formed billions of years ago.
National Earth Science Teachers Association
Windows to the Universe: Cronus (Saturn)
"In Greek mythology, Cronus was the son of Uranus and Gaea." He led a revolt against his father and thereby became the king of the gods. He was later overthrown by his own son Zeus.
National Earth Science Teachers Association
Windows to the Universe: Venus
A treasure trove of images of Venus, the Roman goddess of love and beauty. Among the more famous artworks displayed at this site include Sandro Botticelli's "The Birth of Venus," and "The Venus de Milo," the work of an unknown sculptor.
National Earth Science Teachers Association
Windows to the Universe: Christian Doppler
A biographical sketch of Christian Doppler (1803-1853), the Austrian mathematician whose study on the dependence of pitch upon the relative speed of source and observer resulted in the Doppler effect.
National Earth Science Teachers Association
Windows on the Universe: Air on Venus
Windows to the Universe offers a description of Venus' atmosphere, including what it is made of and why it is so hot and thick.
National Earth Science Teachers Association
Windows to the Universe: Halley's Comet
Fact piece about Halley's Comet.
National Earth Science Teachers Association
Windows to the Universe: What Is Climate?
Takes a brief look at regional climate, global climate, and climate change.
National Earth Science Teachers Association
Windows to the Universe: Acid Rain
Brief explanation of acid rain, a kind of acidic air pollution.
National Earth Science Teachers Association
Windows to the Universe: Nitric Acid
Provides a general overview of nitric acid, its composition, and its uses.
National Earth Science Teachers Association
Windows to the Universe: Nitrogen Oxides
Interesting information on nitrous oxides as they contribute to air pollution.
National Earth Science Teachers Association
Windows to the Universe: Ammonia Nh3
Read about the chemical compound ammonia and learn how it is part of the Nitrogen Cycle.
National Earth Science Teachers Association
Windows to the Universe: Paleoclimates: Climates of the Past
Learn how climate has changed in the past and how it relates to global warming. Links to related material.
National Earth Science Teachers Association
Windows to the Universe: Effects of Climate Change Today
Learn some effects of climate change that are being caused by warmer temperatures. Links to related material.
National Earth Science Teachers Association
Windows to the Universe: Warming of the Polar Regions
Learn about the climate in the Polar regions and how it is affected by global warming. Links to related material.
National Earth Science Teachers Association
Windows to the Universe: What Controls the Climate?
Learn what aspects of our planet have an impact on climate. Links to related materials.
National Earth Science Teachers Association
Windows to the Universe: The Nitrogen Cycle
Interesting information on the Nitrogen Cycle as it relates to the Earth system.