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Get your young physicists' brains working with this PowerPoint about work. Work is defined and the equation for solving problems introduced. Power is also explained along with its problem-solving equation. Sample questions are worked through using clear explanations and diagrams. This is a practical presentation for your physics class.
A total of 29 word problems furnish practice in solving for work, energy, and force. A few of the questions display diagrams to help learners visualize the systems, and all of them list five choices from which they select the correct answer. This makes a pertinent review that you can administer as a homework assignment.
You will need to prepare either a class set or a single demonstration catapult in order to teach this powerful lesson on kinetic and potential energy. Activity sheets are provided to walk learners through the construction of a catapult. If you choose to teach via demonstration, you can jump straight to Activity Sheet 3, on which is a data table for recording distances. Different features of the catapult are varied for comparison. A vocabulary list and challenge questions are provided.
In the world of chemistry, efficiency is defined as: the work a system does, divided by the energy given to that system to complete the work. Sal illustrates this important chemistry concept by drawing a PV graph that shows a Carnot Cycle taking place and calculating the efficiency of the Carnot Engine.
Attractive and logical instructions are provided for constructing a balloon-powered car. Young physical scientists measure the distance their car travels and record it on a pre-printed data sheet. The make alterations to improve the performance. By participating in this activity, learners explore Newton's Third Law of Motion. The plan is cohesive, including objectives, background, procedures, and extension ideas. It is an engaging activity to use in a physical science unit for middle schoolers.
How much work is done when a force moves a block? How far will power lift a block? And how much work can be done by a motor? These are the kinds of questions you will find on this physics problem solving sheet. With 19 problems to solve, there is not enough space on this single sheet assignment. Computations can be performed on a separate sheet of paper to be turned in.
After drawing and labelling a microscope, forensic science explorers use one to solve a simulated murder mystery. They examine each piece of evidence and draw what they observe at each magnification. Working in groups of four, your scientists produce a forensic report. The objective of this lesson plan is for learners to gain competence in handling a microscope.
Sal goes back to a look at the Adiabatic process in this chemistry video. He sets up a Carnot Cycle that occurs within an adiabatic process; meaning there is no transfer of heat. From that problem, Sal constructs Volume Ratios which is a mathematical way of proving that no heat was transferred.
Now, this lesson would be a blast! When your engineering or physics class is examining the reduction of friction or fluid dynamics, you can have them make these hovercraft racers. Using a balloon, a bottle cap, and a compact disc, middle schoolers make simplistic vehicles that appear to defy gravity! Resource links and a video of a real hovercraft in action are provided to support the background information needed.