A study of the geology of Mars should reveal answers to such questions as how Mars developed into the planet we see today and what accounts for the differences and similarities between Earth and Mars. Visitors to this site can learn about ancient magnetism recently discovered by the Mars Global Surveyor that suggests the planet was once more dynamic and Earth-like with a magnetic field shielding the surface from cosmic radiation. They can read about the importance of studying the age and composition of Martian rocks, particularly those rocks and minerals which might have been formed in the presence of water. This is part of NASA's presentation of four science goals for its Mars Exploration Program, a science-driven effort to discover whether Mars was, is, or can be, a habitable world.

First Nations University has developed a new science teaching resource called the National Science Laboratory Video Lessons for Indigenous Youth. The resource includes a variety of materials that bring together Indigenous knowledge and modern science, such as interviews with elders and knowledge keepers, laboratory manuals, and videos of lab experiments completed by students at Carlton Comprehensive High School in Prince Albert, Saskatchewan.

FNU professor and project lead Arzu Sardarli explained that Indigenous knowledge on topics such as heat retention in teepees can be explained using the laws of physics and applied toward house construction today. "It's important not only for Indigenous students, it's very helpful for any student and I hope what we created within this project will be used by mainstream schools, too,” said Sardarli.

The educational materials developed include interviews with Elders and Knowledge Keepers, and laboratory manuals and videos for high school Biology, Chemistry and Physics classes.

This is a hands-on lab activity about the composition of salt. Learners will explain the general relationship between an element's Periodic Table Group Number and its tendency to gain or lose electron(s), and explain the difference between molecular compounds and ionic compounds. They will then use household materials to build a model to demonstrate sodium chloride's cubic form and describe the nature of the electrostatic attraction that holds the structure of salt together. Background information, common preconceptions, a glossary and more is included. This activity is part of the Aquarius Hands-on Laboratory Activities.

Students research the structure of salt to understand the difference between molecular compounds and ionic compounds

Produce light by bombarding atoms with electrons. See how the characteristic spectra of different elements are produced, and configure your own element's energy states to produce light of different colors.

Start a chain reaction, or introduce non-radioactive isotopes to prevent one. Control energy production in a nuclear reactor! (Previously part of the Nuclear Physics simulation - now there are separate Alpha Decay and Nuclear Fission sims.)

Students conduct an experiment to determine how varying the composition of a construction material affects its strength. They make several adobe bricks with differing percentages of sand, soil, fibrous material and water. They test the bricks for strength by dropping them onto a concrete surface from progressively greater heights. Students graph the experiment results and use what they learn to design their own special mix that maximizes the bricks' strength. During the course of the experiment, students learn about variables (independent, dependent, control) and the steps of the engineering design process.

This webpage, one of NASA's fact sheets, describes the role of the oceans, clouds, and aerosols in moderating climate, which has resulted in less-than-expected temperature increases as carbon dioxide levels have increased. It also describes the efforts of scientists to construct computer models to understand interactions between the atmosphere and ocean, and to perform space-based oceanography using the Earth Observing System (EOS). The site features text, pictures, and links to other relevant NASA sites.

The ocean and atmosphere continually exchange particles and gases in a kind of ongoing "dialogue" that influences regional and global climate. This site explains the chemical link between the ocean and atmosphere. Emphasis is on the ocean's ability to store and release water vapor and carbon dioxide, both of which contribute to the greenhouse effect. Features include text, a scientific illustration, and links to other relevant topics, data sets, and satellite missions.

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Explore an active area of research in optical physics: producing designer pulse shapes to achieve specific purposes, such as breaking apart a molecule. Carefully create the perfect shaped pulse to break apart a molecule by individually manipulating the colors of light that make up a pulse.

This 12-minute video lesson discusses acetic acid to acetyl chloride mechanism. They can be generalized to forming any acid halide from a carboxylic acid. [Organic Chemistry playlist: Lesson 69 of 73].

This 13-minute video lesson considers the addition of Water (Acid-Catalyzed) Mechanism. [Organic Chemistry playlist: Lesson 29 of 73].

This 9-minute video lesson looks at the properties of alcohol. [Organic Chemistry playlist: Lesson 46 of 73].

This 7-minute video lesson looks at naming alcohols. [Organic Chemistry playlist: Lesson 45 of 73].

This 8-minute video lesson provides an introduction to aldehyde. [Organic Chemistry playlist: Lesson 61 of 73].

This 12-minute video lesson looks at Aldol Reaction. It is the final video in the Organic Chemistry playlist. [Organic Chemistry playlist: Lesson 73 of 73].

This 9-minute video lesson looks at amide formation from acyl chloride. [Organic Chemistry playlist: Lesson 72 of 73].

This 9-minute video lesson looks at carboxylic Aacid Derivatives: amides, anhydrides, esters and acyl chlorides. [Organic Chemistry playlist: Lesson 70 of 73].

This 6-minute video lesson continues to discuss amine naming. [Organic Chemistry playlist: Lesson 57 of 73].