3 e electronics 171110
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The document discusses electricity and circuit diagrams. It uses an analogy of bread delivery vans to explain the model of current flow in a circuit. Charges carry energy from the battery to the bulb, like vans deliver bread from the bakery to the supermarket. It also discusses that circuit diagrams use symbols to represent components and current (I) is measured in amps using a ammeter.
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The document discusses electricity and current flow through circuits. It explains that current is the flow of charged particles called electrons through a complete circuit, and uses an analogy comparing current to the flow of bread vans delivering bread to a supermarket. It also discusses circuit diagrams and how to measure current using an ammeter, which must be connected in series with other circuit components.
6 d electronics 181110
The document discusses electricity and current flow through circuits. It provides an analogy comparing the flow of bread vans delivering bread to a supermarket to the flow of electric charges delivering energy through a circuit. It then discusses circuit diagrams and how to measure current using an ammeter, which must be connected in series to break into the circuit.
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This document provides an overview of electricity topics including household appliances, safety, alternating and direct current, circuit diagrams, current and voltage, batteries and transformers, resistance, variable resistors and their uses, electrical power, lamps and heaters, series and parallel circuits, fault finding, the mains supply, and domestic electricity meters. It also discusses electric motors and how electricity is used to power movement. Models of current flow are presented using analogies to a bakery delivering bread by van and electric charges delivering energy from a battery to a light bulb.
3 e electronics 171110
1) The document discusses electricity and circuit diagrams. It uses the analogy of bread delivery vans to explain how electric current works, with the battery providing energy to charges that move through a circuit like vans delivering bread.
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The document discusses electricity and current flow through circuits. It provides an analogy comparing the flow of bread vans delivering bread to a supermarket to the flow of electric charges delivering energy through a circuit. It then discusses circuit diagrams and how to measure current using an ammeter, which must be connected in series to break into the circuit.
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3 e electronics 171110
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1 p5 pregnancy 071210
The document outlines the stages of pregnancy from fertilization to birth. It explains that fertilization occurs when sperm meet an egg in the fallopian tubes. The fertilized egg is called a zygote and begins developing in the uterus over the next 9 months as the placenta, umbilical cord, amniotic sac, and amniotic fluid form to support and protect the growing embryo and fetus until birth. The next lesson will cover labor and delivery.
1 p9 puberty 301110
Puberty is the name given to sexual maturity, which normally happens between the ages of 10-16. During this time for girls, breasts develop, the hips widen, and menstrual periods begin. For boys, the voice deepens, facial hair grows, and the testes and penis enlarge. The opening to the uterus is called the cervix. If an egg is not fertilized, the thick spongy lining of the uterus breaks down and sheds, in a process called menstruation which on average lasts 28 days.
1 p5 chemical changes 121110
Chemical changes were discussed, including a homework review, word equations for burning magnesium producing magnesium oxide, and conclusions about chemical reactions producing new substances and involving temperature and appearance changes. The class reviewed learning about magnesium and oxygen reacting to form magnesium oxide, changes when solutions were mixed, and the three common traits of chemical reactions being identified.
1 p5 chemical changes 121110
Chemical changes were discussed, including a homework review, word equations for burning magnesium reacting with oxygen to form magnesium oxide, and conclusions that chemical reactions produce new substances, involve temperature changes, and changes in appearance. The class reviewed learning about magnesium and oxygen reacting to form magnesium oxide, changes when solutions were mixed, and the three common traits of chemical reactions.
1 p9 chemical changes 091010
This document provides an overview of a chemistry lesson on chemical changes and reactions. It includes instructions for homework, a review of elements and compounds, examples of chemical reactions like burning fuel and digestion, and a demonstration experiment of burning magnesium. Students are asked to observe the experiment, note the appearance of magnesium before and after burning, and write the word equation for the reaction with magnesium and oxygen forming magnesium oxide.
1 p5 chemical changes 111110 rev
1. The document outlines a chemistry lesson which includes reviewing chemical reactions, conducting experiments on burning magnesium and mixing solutions, and reviewing the results. Safety procedures are also outlined.
2. The experiments involve burning magnesium strips which produce magnesium oxide, and mixing two solutions which produce a new substance.
3. A chemical reaction was identified as producing new substances, involving a change in temperature, and a change in appearance.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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3 e electronics 171110
- 2. Electricity • What is happening in the circuit? • Circuit diagrams • Measuring current
- 3. Model of current flow BakeryBakery SupermarketSupermarket 1. Bakery Manager loads bread onto the vans and sends them off 2. As soon as the vans start to move, bread is delivered to the supermarket. 3. All the vans move at the same speed. 4. If the manager speeds the vans up, more bread is delivered to the supermarket in a certain time. 5. If the manager loads more bread on each van, more bread is delivered to the supermarket in a certain time. The vans deliver the bread to the supermarket where the shoppers take it away. The empty vans go back to the bakery to get more bread. Each van takes bread to the supermarket. Empty vans collect bread at the bakery.
- 4. Model of current flow 1. The battery provides energy and makes the charges move. 2. As soon as the charges start to move, energy is delivered to the bulb 3. All the charges move at the same speed 4. If the charges speed up, more energy is delivered to the bulb in a certain time. 5. If more energy is carried by each charge, more energy is delivered to the bulb in a certain time. Charges deliver energy to the bulb where it is transferred to heat and light. Charges return to the battery to collect more energy. Charges are atom sized particles already in the wire. The charges carry energy. Charges collect energy at the battery. The electric current (Amperes) is the number of charges passing a point each second
- 5. Circuit diagrams • Charges flow in a complete circuit • Components in circuits are drawn using symbols:
- 6. Measuring current • Current (flow of charge) has symbol I, and is measured in Amperes or Amps (A) for short • We use an Ammeter to measure current through a circuit
- 7. Measuring current • Current (flow of charge) has symbol I, and is measured in Amperes or Amps (A) for short • We use an Ammeter to measure current through a circuit
Editor's Notes
- We can see light and heat given off from a bulb in a simple circuit (cell, switch, lamp) – we can see the effect of the energy transfer – but we cannot see how this happens! What happens in the battery / wires / bulb? To help us understand, we have built a model to explain what is going on. Aim of next few lessons is for you to become experts in understanding and explaining how electric currents work… So let’s talk about something different for a few minutes… Note vans travel nose to tail…. NO VANS DISAPPEAR!!!!
- So looking at the supermarket model and using this to talk about current flow… Current/charge is NOT USED UP in the circuit (i.e. we are NOT ‘using up’ electrons) – only the energy they carried is transferred