3.6 Applying Bernoullis Principle
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The document outlines a 3-part activity to teach students about Bernoulli's principle through hands-on experiments and questions. In part 1, students will blow on paper, straws between balls, and cans to observe pressure differences. They will then explain the relationship between air velocity and pressure. In part 2, students will use these observations to define resultant force and pressure differences. In part 3, students will demonstrate applications of Bernoulli's principle like lift on an airfoil and why passengers must stand behind barriers at train stations.
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A barometer is an instrument that measures atmospheric pressure by balancing the weight of mercury, water, or air in a tube against the outside air pressure. Evangelista Torricelli invented the barometer in 1643 using a vacuum to compare atmospheric pressure to zero pressure. Barometers can help forecast weather by measuring changes in air pressure, with high pressure indicating colder weather and low pressure signaling warmer temperatures and rain.
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Torricelli invented the barometer in 1644 using a glass tube filled with mercury, noticing that atmospheric pressure caused the mercury's level to rise and fall. The barometer works by balancing the weight of the mercury against air pressure, with higher pressure lowering the mercury level. Later refinements included a U-shaped tube and additions like a dial to read the mercury's height in inches to measure pressure changes.
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This document discusses base and derived physical quantities in physics. It defines base quantities as those that cannot be derived from other quantities, and lists the five base SI units as length, mass, time, temperature, and current. Derived quantities are defined as those derived from base quantities through multiplication or division, and examples given are area, velocity, and density. The document also discusses scalar and vector quantities, with scalars having magnitude only and vectors having both magnitude and direction.
Experimenting
This document describes several activities to teach students about experimentation and identifying variables. The activities explore evaporation, solubility, dissolving, acids, alkalis, temperature, pressure, springs, and friction. For each activity, the document identifies the manipulated variable, responding variable, and any constant/controlled variables. It also provides examples of how to operationally define scientific terms based on experimental observations and measurements. The overall purpose is to help students learn about experimental design and identifying the key variables in experiments.
Glosary
This document provides teaching materials and activities for lessons on water and solutions. It includes:
1. Word lists and definitions for key scientific terms related to the physical characteristics and composition of water, such as melting point, boiling point, and electrolysis.
2. Details on activities to reinforce vocabulary, including word puzzles, jumbles, and crossword puzzles using the terms.
3. Instructions for teachers on distributing materials, having students complete the activities, and going over answers to check understanding.
The goal is to help students learn and understand important scientific vocabulary through engaging classroom exercises on topics like the physical properties and molecular structure of water.
Misconceptions
This document discusses common misconceptions that occur during the teaching and learning of science topics. It provides examples of misconceptions related to various concepts in biology and physics. The objectives are to help teachers identify these misconceptions and be aware that they may be unintentionally passing them on to students. Suggestions include activities for teachers to help students distinguish between correct and incorrect understandings. The document aims to improve science education by reducing the spread of misconceptions.
P A N T U N F I Z I K
Pantun ini membahas tentang prinsip-prinsip fizik seperti tekanan, tindak balas tekanan, dan sistem hidraulik. Pantun 1 dan 2 membahas tentang tekanan yang dihasilkan oleh beban dan atmosfera. Pantun 3 dan 4 menjelaskan bagaimana tekanan cecair dan atmosfera dapat mempengaruhi pergerakan cecair. Pantun 5 ingin membina sistem hidraulik berdasarkan prinsip Pascal.
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Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
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For more information about PECB:
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Introduction to objective, scope and outcome the subject
Chapter 2
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Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
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Chapter 6
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2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
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