Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
History of electromagnetic theory wikipedia , lookup
Maxwell's equations wikipedia , lookup
Electromagnet wikipedia , lookup
Electromagnetism wikipedia , lookup
Aharonov–Bohm effect wikipedia , lookup
Speed of gravity wikipedia , lookup
Field (physics) wikipedia , lookup
Lorentz force wikipedia , lookup
The Structure of the Earth Opportunities to focus students on the SLO’s they have been given (a reminder that they have them) and a focus for the lesson for both them and me SLO’s The Structure of the Earth • There are four layers that make up the structure of the earth • Each layer has different characteristics Possible to use great visuals and some simple notes. Opportunity to get students to draw a simple version of the diagram and label it from this diagram (process and generalise the information) The Crust • The thinnest layer 740km thick (similar in scale to the thickness of the skin on an apple) • Made up mainly of solid rock Opportunities to use a great visual to build on and reinforce terms (see next two slides), wonderful quick recap for next lesson and beyond and some simple class notes The Mantle • The thickest layer at 2800km • The mantle is made of magma which is thick, sticky, slow moving molten rock • Magma ranges in temperature between 1300C directly under the crust to 2000 C near the outer core Heaps of opportunities to use questioning to draw out prior knowledge assess understanding or target revision The Outer Core • This layer is 2000km thick • Made of liquid iron and nickel at 3000C The Core • The core is 2300km in diameter • It is made of solid iron and nickel (solid because of the pressure of all the other layers) • The core is the hottest layer at 4000C So easy to present the info in a new way (another diagram), giving students the chance to look at things from a different angle The Core Easy to give students a introduction to an area they have never visited. After asking for a show of hands about who had been to Rotorua I left them to read an article about the Tarawrea eruption. As they read I googled some pictures and put a together a simple virtual tour of the area Mt Tarawera The Mountain and the Lake Mt Tarawera Mt Tarawera The Pink and White terraces (A Wonder of the World) Mt Tarawera The Unexpected Eruption Mt Tarawera The Aftermath of the Eruption Mt Tarawera The Buried Village of Te Wairoa today Mt Tarawera The Ruptured Mt Tarawera (15km rift, 11 craters) Worksheet A reminder to me and a useful visual cue for students of the relevant worksheet and a hyperlink if I need to print off more copies \\tgfp01.tghs.school.nz\teachershome$\amckay\School\Year 10 Science\Earth Science\Internet Activity Volcanoes.doc Examples 1. A 15μC test charge experiences a force of 5mN when it is placed in an electric field. Calculate the strength of the field. 330NC-1 (2sf) 2. A 25 μC test charge is placed in an electric field of 150NC-1. What is the size of the force on the test charge? 3.8mN (2sf) 3. A test charge in an electric field of 180NC-1 experiences a force of 4.5mN. Find the size of the charge. For topics involving worked examples, setting a question answer that 25with µCthe(2sf) can be revealed for the quick finishers and for self assessing. Full working then done as necessary on that whiteboard that hasn’t been covered up by a data projector screen Exercises • ABA, Pg 142-150 • ESA, Activity 15A, Pg 177 Useful to be able to put up the textbook exercises with a picture of the text book. Saves on looking up the page each year, having to write it on the board and avoids the “Which book is ABA?” questions Electric field in a Wire Reasonably straight forward to make some fancy diagrams to demonstrate or develop concepts + + + + + + + + + + + + - • An electric field forms inside the wires of a circuit when the circuit is complete • The field is just like the field between two plates except that it is inside the wire and often there is quite a large distance between the terminals • The movement of the charges around the circuit (current) is a result of the electric field acting on the charges (electrons) inside the wire Reviewing the Concepts Great for developing revision notes, lots of scope for questioning drawing out info and assessing understanding • Electric field Strength – The amount of force on a charge • Electric potential energy – The work done on a charge in an electric field • Electric potential difference – Electric potential energy per charge • Potential gradient – A practical way of calculating E E F q or F Eq Units NC-1 W Eqx or EP Eqx Units J Equivalent units V Ex Units V V Ex we can rearrange this to give; E V x Units Vm-1 Photos of setup details or exemplars etc save a thousand words Tables allow the use of real data collected in class Trolley-run Data Constant Speed Accelerating time (s) distance (m) time (s) distance (m) 0 0 2 2.4 4 5.6 6 7.4 8 9.3 10 11.4 12 14.4 14 16.6 0 2 4 6 8 10 12 14 16 0 0.7 2 3.75 6.2 8.5 11.5 15.5 20.25 The Distance/time Graph Graphs with class data etc can be plotted from within PowerPoint or copied from Excel Trolley Motion 25 Distance (m) 20 15 Acceleration Constant Speed 10 5 0 0 2 4 6 8 10 Time (s) 12 14 16 18 Links • http://www.suu.edu/faculty/colberg/Hazards/Pl ateTectonics/18_Pangaea.html Hyperlinks to useful websites can be added so just a click takes you to the site Animations can be part of the presentation Animations Lunar Eclipse …and videos Videos Shadow Art The slides of a PowerPoint can be printed out (up to 9 per page) for students who have been away or who are going away Catch-up Notes PowerPoint Opportunities • Expected – More consistent class notes – Scope to use images, animations and videos • Unexpected – – – – ICT “magic” –student focus on the screen Being freed up from the white board (but don’t cover it, it’s still useful) Discussion/questioning opportunities Organisation of resources • SLO’s, wkshts, equipment setups (photos) • Comments, reflections, reminders – – – – – Display of live data/graphs Worked examples/questions and answers/quick tests Ease of revision Catch up or work for students away from school Flexibility of delivery • Modification of notes –level/content • Changing order