When capacitors are connected one after another, they are said to be …
When capacitors are connected one after another, they are said to be in series. For capacitors in series, the total capacitance can be found by adding the reciprocals of the individual capacitances, and taking the reciprocal of the sum. Therefore, the total capacitance will be lower than the capacitance of any single capacitor in the circuit. Created by David SantoPietro.
Students are presented with a short lesson on the difference between cohesive …
Students are presented with a short lesson on the difference between cohesive forces (the forces that hold water molecules together and create surface tension) and adhesive forces (the forces that causes water to "stick" to solid surfaces. The interaction between cohesive forces and adhesive forces causes the well-known capillary action. Students are also introduced to examples of capillary action found in nature and in our day-to-day lives.
This module provides an overview of the biogeochemical carbon cycle. Major sources …
This module provides an overview of the biogeochemical carbon cycle. Major sources and sinks of carbon are discussed as well as the impact of human activities on global carbon levels.
Students observe Pascal's law, Archimedes' principle and the ideal gas law as …
Students observe Pascal's law, Archimedes' principle and the ideal gas law as a Cartesian diver moves within a closed system. The Cartesian diver is neutrally buoyant and begins to sink when an external pressure is applied to the closed system. A basic explanation and proof of this process is provided in this activity, and supplementary ideas for more extensive demonstrations and independent group activities are presented.
There are two types of catalysis reactions: homogeneous and heterogeneous. In a …
There are two types of catalysis reactions: homogeneous and heterogeneous. In a homogeneous reaction, the catalyst is in the same phase as the reactants. In a heterogeneous reaction, the catalyst is in a different phase from the reactants. This activity addresses homogeneous catalysis.
This is a really fun and informative lesson that I do with …
This is a really fun and informative lesson that I do with my high school Programming/technology class to break up the monotony of beginner programming. However; this lesson can be used and applied in essentially any class and for many purposes, and to address many areas. One of the other really nice things about this lesson is that it can be extended to hit many points including physics, math, and advanced engineering.
Throughout the building period, I would present teams with a challenge (puzzle, build, etc…) and the first team to complete it would get a prize. It could be more modification time, extra materials, etc…)
The materials (including hot glue guns) can be purchased at Wal Mart or a similar store for around $20-25, if ordering through your district isn’t an option. With those purchases, it gives you a lot more materials than needed which can be used for additional similar projects.
This is a really fun and informative lesson that I do with …
This is a really fun and informative lesson that I do with my high school Programming/technology class to break up the monotony of beginner programming. However; this lesson can be used and applied in essentially any class and for many purposes, and to address many areas. One of the other really nice things about this lesson is that it can be extended to hit many points including physics, math, and advanced engineering.
Throughout the building period, I would present teams with a challenge (puzzle, build, etc…) and the first team to complete it would get a prize. It could be more modification time, extra materials, etc…)
The materials (including hot glue guns) can be purchased at Wal Mart or a similar store for around $20-25, if ordering through your district isn’t an option. With those purchases, it gives you a lot more materials than needed which can be used for additional similar projects.
Students observe the relationship between the angle of a catapult (a force …
Students observe the relationship between the angle of a catapult (a force measurement) and the flight of a cotton ball. They learn how Newton's second law of motion works by seeing directly that F = ma. When they pull the metal "arm" back further, thus applying a greater force to the cotton ball, it causes the cotton ball to travel faster and farther. Students also learn that objects of greater mass require more force to result in the same distance traveled by a lighter object.
This activity demonstrates the spectral nature of light and the identifiable features …
This activity demonstrates the spectral nature of light and the identifiable features of the visible light spectrum. Students learn the elemental spectrum, and the ROYGBIV distribution of colors in a rainbow. Students compare the spectra of various light sources, and how to identify specific elements based on their spectral signature.
Student groups compete to design a process that removes the most iron …
Student groups compete to design a process that removes the most iron from fortified cereal. Students experiment with different materials using what they know about iron, magnets and forces to design the best process for removing iron from the cereal samples.
The Chandra Astrophysics Institute (CAI), a Chandra X-ray Observatory–sponsored program run by …
The Chandra Astrophysics Institute (CAI), a Chandra X-ray Observatory–sponsored program run by the MIT Kavli Institute for Astrophysics and Space Research, was intended for students from the Boston area from a wide range of academic backgrounds with a limited opportunity to directly experience authentic science. The CAI was a year-long program to train for and take part in authentic astronomy projects. Participants built employable research, technology, and collaboration skills and the background knowledge necessary to understand how research science is done. Investigations of different astronomical systems were undertaken during a five-week summer session at MIT. Participants, mentored by MIT researchers and educators, then applied these skills to undertake research projects in x-ray astronomy based on observations made with the Chandra X-Ray Observatory.
This is an activity about image comparison. Learners will analyze and compare …
This is an activity about image comparison. Learners will analyze and compare two sets of images of the Sun taken by instruments on the Solar Dynamics Observatory spacecraft. With Set 1, they will observe the Sun in both a highly active and a minimally active state, and be able to detect active regions and loops on the Sun by comparing the two images. With Set 2, they will identify areas of high magnetic activity on a magnetogram image and recognize that these areas correspond to highly active regions on the Sun.
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