In this NASA video, scientists describe how the Extreme Ultraviolet Variability Experiment …
In this NASA video, scientists describe how the Extreme Ultraviolet Variability Experiment will sample and track the Sun's ultraviolet irradiance, providing a detailed time sequence of extreme ultraviolet output -- data that can provide advance warning for potentially disruptive energy bursts.
Students explore the chemical identities of polymeric materials frequently used in their …
Students explore the chemical identities of polymeric materials frequently used in their everyday lives. They learn how chemical composition affects the physical properties of the materials that they encounter and use frequently, as well as how cross-linking affects the properties of polymeric materials.
The evolution of paints has seen advancements from acrylics to smart coatings …
The evolution of paints has seen advancements from acrylics to smart coatings with self-healing and color-changing properties. Early developments included acrylics, water-based latex paints, polyurethane coatings, powder coatings, and nanotechnology. Breakthroughs introduced advanced smart coatings, graphene-based coatings, bioluminescent paints, and photocatalytic paints. The smart revolution brought self-healing coatings, responsive color-changing paints, anti-graffiti coatings, and hydrochromic/photochromic paints. Future applications include military use for camouflage and safety, energy efficiency, and solar paint for clean energy production.
Students use an EPA data set of Nevada mines to evaluate proximity …
Students use an EPA data set of Nevada mines to evaluate proximity of mine sites to streams to choose priority water sampling sites to evaluate for possible contamination. Students export data to Google Earth to use satellite imagery to narrow the priority sites further. You might also be interested in our Full GIS course with links to all assignments.
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Students do background reading on the atmosphere (see URLs below). The questions …
Students do background reading on the atmosphere (see URLs below). The questions in this activity are divided up into atmospheric structure, stratospheric ozone, and acid rain. This activity helps students to understand the basic structure of the atmosphere as well as ozone and acid rain problems.
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The Basics of General, Organic, and Biological Chemistry covers general organic and …
The Basics of General, Organic, and Biological Chemistry covers general organic and biological chemistry concepts typically for one-semester chemistry courses.
This module consists of a laboratory exercise and related homework problems on …
This module consists of a laboratory exercise and related homework problems on geochemical kinetics of mineral-solution reactions for undergraduate mineralogy. Students measure the grain sizes of equant halite crystals, and the time for complete dissolution of each grain. From these data, students retrieve a rate law, from several possible. Additional homework problems allow various chemical and physical transport processes in mineral-fluid systems to be evaluated.
The lab and homework illustrate several basic principles of chemical kinetics directly relevant to geology, including rate laws of reactions, diffusion, advective transport, and the relationship between rate-limiting mechanisms and crystal-surface morphology.
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This lab activity leads students to a better understanding of exo-endo- thermic …
This lab activity leads students to a better understanding of exo-endo- thermic processes. It also reinforces the necessity for proper lab safety equipment and disposal techniques.
In this video segment adapted from NASA, students in Matsuyama City, Japan, …
In this video segment adapted from NASA, students in Matsuyama City, Japan, interview Expedition 8 Commander and NASA Science Officer Mike Foale and Flight Engineer Alexander Kaleri about life and work aboard the International Space Station.
The activity described herein can be implemented in introductory chemistry and high …
The activity described herein can be implemented in introductory chemistry and high school chemistry courses. The main goal of the project is to integrate a ubiquitous biodiesel production with experiential learning by providing a community-based project. The students work in groups, research the benefits of using biodiesel over petroleum-based diesel, collect waste cooking oil from home or restaurants, develop simple and cost-effective methods to produce biodiesel, as well as making soap.
This course provides an introduction to the atmospheric chemistry involved in climate …
This course provides an introduction to the atmospheric chemistry involved in climate change, air pollution and biogeochemical cycles using a combination of hands-on laboratory, field studies, and simple computer models. Lectures will be accompanied by field trips to collect air samples for the analysis of gases, aerosols and clouds by the students.
In this video segment adapted from ZOOM, the cast investigates how the …
In this video segment adapted from ZOOM, the cast investigates how the pitch of sound changes when they strike a variety of glasses filled with different amounts and types of liquids.
Can a fresh lemon power a digital clock? In this video segment …
Can a fresh lemon power a digital clock? In this video segment adapted from ZOOM, the cast shows you how this can be done and, in the process, discover how kids can be a part of an electric circuit.
In this experiment, students use a solar cooker to model the greenhouse …
In this experiment, students use a solar cooker to model the greenhouse effect. Students collect, track, and compare data including insolation, ambient temperature, and water temperature with various instruments such as a pyranometer, thermometers, and temperature probes. They also develop their own experiments (incorporating set up, controls, data collection and presentation) to examine the strength of ultraviolet radiation from the sun with various protective materials using uv-sensitive beads. They must then analyze the data, finding correlations and conclusions, and determine the best way to present the results (tables, graphs, write-up).
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This assignment allows students to utilize real soil data/information presented online to …
This assignment allows students to utilize real soil data/information presented online to learn how the some of the physical properties of the soil influence the chemistry of the soil and health of the ecosystem.
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At the end of this exercise students will be able to use …
At the end of this exercise students will be able to use computer-based software to draw crystal structures and visualize symmetries present in minerals. By varying the way in which atoms or groups of atoms are displayed, they will begin to see how atoms link through bonds. Students will also begin to investigate the effects of variable composition on bonding on unit cell parameters.
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This is a teacher demonstration used to show an example of kinetic …
This is a teacher demonstration used to show an example of kinetic molecular energy using food coloring and water. The students are also given opportunity to develop their own questions and tests.
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