Current Events

  • Irish Chronicles Document Links Between Volcanoes and Weather
    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong corr...Read more

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    Irish Chronicles Document Links Between Volcanoes and Weather

    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong correlation between the occurrence of volcanic eruptions and extreme cold weather in Ireland over a 1200 year period. Data analyzed in this study cover the period from 431 to 1649, during which time up to 48 volcanic eruptions are identified in Greenland ice core records through deposition of volcanic sulfate in annual layers of ice. You can find the study (open access), published on 6 June 2013 in IOP Publishing's journal Environmental Research Letters, at http://iopscience.iop.org/1748-9326/8/2/024035/article. Find out more about how volcanoes can influence climate.
  • EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US
    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, acco...Read more

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    EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US

    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, according to the National Weather Service in Norman Oklahoma. The tornado, which remained on the ground for 40 minutes and reached 2.6 miles across (4.2 km), took the lives of 18 people including storm chasers Tim Samaras, Paul Samaras and Carl Young. For more information on the tornado, visit http://ow.ly/i/2hfDG.
  • Atmospheric CO2 Level Tops 400 ppm
    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm rep...Read more

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    Atmospheric CO2 Level Tops 400 ppm

    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For more on the Keeling Curve, see http://keelingcurve.ucsd.edu/. Find out more about greenhouse gases and warming.

Fundamental Physics

Physics is the study of basic properties, materials, and forces in our Universe. Our new physics section will start off with some background material about space, time, and matter. It will also include sections on mechanics, electricity and magnetism, thermal physics, atomic physics and particle physics, and tools for math and science (vectors, coordinate systems, units of measurement, etc.).

The new physics section will also have links to many data sources relevant to Earth and space science. The links below provide access to some of the physics-related materials currently on the site. They are organized roughly into the categories we will use in the forthcoming physics section.

Starting Points for Science

Mechanics

Electricity and Magnetism

Thermal Physics

  • No entries here yet. The new physics section will include topics like heat, temperature, the laws of thermodynamics, conduction & convection, etc.

Atomic Physics and Particle Physics

Tools for Math and Science

  • No entries here yet. The new physics section will include topics like vectors, coordinate systems, units of measurement, etc.

Data

Podcast about a flexible, safe contact lens with an imprinted electronic circuit and lights
Last modified August 26, 2010 by Roberta Johnson.

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Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

What is mass?

Would it be more difficult to pull an elephant or a mouse? If you pulled each animal the same amount, the mouse would come towards you but the elephant would not move at all, even if he didn’t try to...more

Atomic Mass

One way scientists measure the size of something is by its mass. Mass is sort of like weight. Scientists can even measure very, very tiny things like atoms. One measure of the size of an atom is its "atomic...more

Changes of State: Solids, Liquids, and Gases

A snowman, glass of water and steam might look very different but they are made of the same stuff! Just like any substance, water has three different forms, called states: solid, liquid and gas. The state...more

Solid

Solid is one of the four common states of matter. The three others are gas, liquid, and plasma. There are also some other exotic states of matter that have been discovered in recent years. Unlike liquids...more

The Plasma State

Plasma is known as the fourth state of matter. The other three states are solid, liquid and gas.Almost everything is made up of atoms (your dog, your science book, this computer...). The atom has a nucleus...more

Fundamental Forces

There are four forces in the Universe: strong, weak, electromagnetic and gravity. You may be most familiar with gravity. Gravity is what holds you and your dog to the surface of this planet! The other...more

Kepler's 2nd Law: The Speeds of Planets

Kepler realized that the line connecting the planet and the Sun sweeps out equal area in equal time. Look at the diagram to the left. What Kepler found is that it takes the same amount of time for the...more

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Ready, Set, SCIENCE!, by the National Research Council, focuses on K-8 science classsrooms. Check out the other publications in our online store, as well as classroom materials.

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF