Ce manuel a été conçu pour les étudiants inscrits au cours CHM1711 Principes de chimie à l'Université d'Ottawa.
Thinking about how we get Calories from the land limits human population densities
Paul Andersen explains how land is developed for human use. Urbanization has occurred through the last century as people have moved to cities in large numbers. Transportation and the arrival of the car have led to urban sprawl and urban blight.
Mars Science Laboratory engineers have a dress rehearsal for Curiosity's landing day on the Red Planet.
Lanthanum is the first of the rare earth minerals. Hear a mnemonics used by chemists to remember the order of the lanthanide series. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
Everything will end. Even the universe. But in a future so far away that it defies description, there will still be light and therefore a chance for life. It will be around White Dwarfs, the corpses of stars. But even they will fade one day. The video "The Last Light Before Eternal Darkness - White Dwarfs & Black Dwarfs" is a resource included in the Space sciences topic made available from the Kurzgesagt open educational resource series.
The last star in the universe will be a red dwarf. Red dwarfs in general might be great places to look for aliens - or planets for humans to find a new home after our solar system has died. The video "The Last Star in the Universe - Red Dwarfs Explained" is a resource included in the Space sciences topic made available from the Kurzgesagt open educational resource series.
The learning of linear functions is pervasive in most algebra classrooms. Linear functions are vital in laying the foundation for understanding the concept of modeling. This unit gives students the opportunity to make use of linear models in order to make predictions based on real-world data, and see how engineers address incredible and important design challenges through the use of linear modeling. Student groups act as engineering teams by conducting experiments to collect data and model the relationship between the wall thickness of the latex tubes and their corresponding strength under pressure (to the point of explosion). Students learn to graph variables with linear relationships and use collected data from their designed experiment to make important decisions regarding the feasibility of hydraulic systems in hybrid vehicles and the necessary tube size to make it viable.
Video of the Mars Science Laboratory spacecraft launch from Cape Canaveral, Florida on Nov. 26, 2011, onboard an Atlas V rocket.
More complicated example involving launching and landing at different elevations
This NASA video segment explores how Newton's third law of motion applies to aerospace. An instructor at NASA's National Test Pilot School defines the third law and explains how a jet engine works to move an aircraft forward. There is also a discussion about the four forces involved in flying an aircraft. This resource, "Newtons Third Law Video" is included in Lesson 4 Newton's Third Law Applied which is a part of Unit 04 Newton's Laws and Aerospace Application included in ASA - Course 1 of the Aerospace & Mechanical Engineering subject area.
The resource "The Law of Gravity" is included in the Physics Fundamentals topic of the EICC Engineering Techology Simulations resource series. This series is segment of a Department of Labor grant awarded to the Eastern Iowa Community Colleges (EICC) of Clinton, Muscatine, and Scott.
Mr. Andersen explains the law of superposition and the principle of original horizontality. He uses an animation to explain how rock layers can accumulate over time.
Lawrencium was another of the topics discussed on The Professor's recent London Road Trip. This video is one of the 103 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
Le Chatelier's Principle regarding the "stressing" of reactions in equilibrium
Paul Andersen explains how Le Chatelier's Principle can be used to predict the effect of disturbances to equilibrium. When a reversible reaction is at equilibrium disturbances (in concentration, temperature, pressure, etc.) will be offset to reach a new equilibrium. For examples when more reactants are added the reaction will move to the right to reestablish the equilibrium constant.
Special submarines and heavy-duty glass - find out all about element number 82. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
Paul Andersen explains how ray diagrams for lenses can be used to determine the size and location of a refracted image. Images may be either real or virtual images. Ray diagrams for converging and diverging lenses are included.
This lesson introduces students to three of the six simple machines used by many engineers: the lever, the pulley, and the wheel-and-axle. In general, engineers use the lever to magnify the force applied to an object, the pulley to lift heavy loads over a vertical path, and the wheel-and-axle to magnify the torque applied to an object. The mechanical advantage of these machines helps determine their ability to make work easier or make work faster.
In this video Paul Andersen explains how you can use Lewis Diagrams and VSEPR Models to make predictions about molecules. The Lewis diagrams are a two-dimensional representations of covalent bonds and the VSEPR models show how the molecule could exist in three dimensional space.