(Complete Item Description)
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This is another simulation showing images formed by concave and convex lenses, but this one shows the images of two dimensional objects.
- Subject:
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Mathematics and Statistics
- Grade Level:
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Secondary,
Post-secondary
- Collection:
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GeoGebraTube
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As an activity related to FOSS unit Magnetism and Electricity, 4th grade science students use a computer download to explore electrical circuits and to generate illustrations of electrical circuits for physical models built in class
- Subject:
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Science and Technology
- Grade Level:
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Primary
- Collection:
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Pedagogy in Action (SERC)
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The longest geological cycle identified is described as about 600 million years in "Megacycles", the proceedings of a geological conference, Edited by G Williams. However Prof. S. Afanasiev of Moscow has determined the cycle very accurately to be 586.24 million years using his Nanocycles Method. It so happens that cosmologists, Broadhurst, T.J., Ellis, R.S., Koo, D.C. & Szalay (Nature 343, p 726) have observed regular mega-walls of galaxies at spacings that they describe as 128 Mpc/h, which based on the latest Hubble constant values would correspond to 588 million light years. Some cosmologists have suggested that the regularity might result from standing waves. Standing waves in space of wavelength 586 million light years would oscillate in 586 million years. In addition, if there are present harmonics of these waves as both the geological cycles and the additional peaks in the galaxy survey indicate, then powerfully energetic events would recur on Earth at these intervals. This agreement on the wave sizes actually allows a much more accurate Hubble constant to be determined from Afanasiev's accurate cycle period.
- Subject:
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Science and Technology
- Grade Level:
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Post-secondary
- Collection:
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SciVee
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No Strings Attached
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- Abstract:
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What are “dimensions”? An introduction to the 5th dimension.
- Subject:
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Science and Technology
- Grade Level:
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Post-secondary
- Collection:
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SciVee
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No Strings Attached
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This classroom activity will show students that there is a lot we don't know about science, for example life throughout the universe. It will hopefully encourage students to question what we know and don't know, and exploration and study of the unknown.
- Subject:
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Science and Technology
- Grade Level:
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Secondary
- Collection:
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Pedagogy in Action (SERC)
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Introduces the object that contains almost all of the mass in the universe, the atomic nucleus. Antimatter, beta rays, fission and fusion, the structure of the atomic nucleus, how elements on the earth were produced, how we use the nucleus in every day life, and the effects of radiation in the environment are among the topics. The site includes nearly a dozen experiments that can be done in chemistry and physics classes, along with A Teacher's Guide to the Nuclear Science and Technology Wall Chart.
- Subject:
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Science and Technology
- Grade Level:
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Primary,
Secondary
- Collection:
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U.S. Department of Energy
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This educational brief explains the idea that nuclear fusion is thought to be the mechanism by which virtually all of the elements around us are created. Topics include the proton-proton cycle, the carbon-nitrogen-oxygen cycle, and endothermic reactions in supernova explosions. There is also a discussion of the Advanced Composition Explorer (ACE), a spacecraft intended to study the origin and evolution of the elements produced by our Sun.
- Subject:
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Science and Technology
- Grade Level:
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Secondary
- Collection:
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NASA
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No Strings Attached
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Worksheet on circuits that looks at the AND logic gate. Students are required to mark the current flow to show the possible combinations of high and low inputs and high or low output. They must draw up a truth table and relate each line of the truth table to a complete circuit. A set of circuits with current flow marked is also given as a 'solution'.
- Subject:
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Science and Technology
- Grade Level:
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Secondary
- Collection:
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Scoilnet
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(Complete Item Description)
- Abstract:
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Relevant material from MIT's introductory courses to support students as they study and educators as they teach the AP Physics curriculum.
- Subject:
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Science and Technology
- Grade Level:
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Secondary,
Post-secondary
- Collection:
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MIT Highlights for High School
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Early in 2008, an Ariane 5 rocket blasted off from Europe’s spaceport in French Guiana. The rocked carried the most sophisticated lorry ever built – the European Space Agency’s Automated Transfer Vehicle, the ATV. From its first flight, ATV will play a vital role in International Space Station (ISS) servicing. Every 12 months or so, the ATV will haul 7.5 tonnes of cargo to the ISS, 400 km above the Earth. The video - addressed mostly to the youngsters- tells the story of a very special delivery and provides information about the ATV, its highly technological features and its importance for the ISS. For further information and exercises please visit our Education ESA website http://www.esa.int/esaHS/education.htmlhttp://www.esa.int/SPECIALS/Space_In_Bytes/index.html
- Subject:
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Science and Technology
- Grade Level:
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Primary,
Secondary,
Post-secondary
- Collection:
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SciVee
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No Strings Attached
(Complete Item Description)
- Abstract:
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The nature of acceleration is determined by the net external force for constant mass system. Depending on the nature of force, there exists wide range of possibilities like zero, constant or varying accelerations in one dimensional motion.
- Subject:
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Science and Technology
- Grade Level:
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Secondary
- Collection:
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Connexions
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No Strings Attached
(Complete Item Description)
- Abstract:
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Solving problems is an essential part of the understanding process.
- Subject:
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Science and Technology
- Grade Level:
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Post-secondary
- Collection:
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Connexions
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No Strings Attached
(Complete Item Description)
- Abstract:
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Motion in two dimensions with one dimensional acceleration (projectile) is analyzed with component motions in coordinate system, whereas motion in two dimensions with two dimensional acceleration (circular motion) is analyzed with the help of component accelerations - tangential and normal accelerations.
- Subject:
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Science and Technology
- Grade Level:
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Post-secondary
- Collection:
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Connexions
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No Strings Attached
(Complete Item Description)
- Abstract:
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Solving problems is an essential part of the understanding process.
- Subject:
-
Science and Technology
- Grade Level:
-
Post-secondary
- Collection:
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Connexions
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No Strings Attached
(Complete Item Description)
- Abstract:
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The rate of change of velocity with time is called acceleration. Most of the real time examples of motion are accelerated in variety of ways - despite the fact that the basic nature of the matter is to maintain its velocity in both direction and magnitude
- Subject:
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Science and Technology
- Grade Level:
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Secondary
- Collection:
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Connexions
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No Strings Attached
(Complete Item Description)
- Abstract:
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Using students' step length to understand the relationship between distance, speed and acceleration. Includes graphing of data and interpretation of graphs.
- Subject:
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Mathematics and Statistics,
Science and Technology
- Grade Level:
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Secondary
- Collection:
-
Pedagogy in Action (SERC)
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This website presents MathWorld's definition of accuracy. The site also includes links to related concepts and other math topics.
- Subject:
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Mathematics and Statistics
- Grade Level:
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Post-secondary
- Collection:
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Wolfram
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Read the Fine Print
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In physics and mathematics, series expansions to approximate functions are often used because using the exact solution is either impossible or involves unnecessary complicated calculations. This Demonstration shows accuracy for a series of expansions and how adding terms increases that accuracy moving away from the origin.
- Subject:
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Mathematics and Statistics,
Science and Technology
- Grade Level:
-
Secondary,
Post-secondary
- Collection:
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Wolfram
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A car propelled by the reaction between lemon juice and baking soda has more in common with rockets and jet aircraft than one might think. In this video segment adapted from ZOOM, two cast members demonstrate the power of rocket-propelled vehicles and how to exploit the force produced by the carbon dioxide gas. Grades 3-8.
- Subject:
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Science and Technology
- Grade Level:
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Primary,
Secondary
- Collection:
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Teachers' Domain
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Effective measurement techniques include the concept of measurement uncertainty. Students may make erroneous conclusions analyzing data using measurements that do not include the uncertainty of the measurement. In this lab, students determine a density range for a metal and identify the material based on this range.
- Subject:
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Science and Technology
- Grade Level:
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Secondary,
Post-secondary
- Collection:
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comPADRE
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