Does your body use electricity at all? Is it similar to a circuit? Bell Work 4-21-15 Does your body use electricity at all? Is it similar to a circuit? -Explain your answer Yes, electrical signals travel along nerves carrying information to and from your BRAIN. Heart uses electrical impulses to move blood http://app.discoveryeducation.com/player/?assetGuid=33a52d2a-2e47-4445-8278-555fd7eb7e2d&fromMyDe=0&isPrinterFriendly=0&provider=&isLessonFromHealth=0&productcode=US&isAssigned=false&includeHeader=YES&homeworkGuid

Vocab: Work at the Bell __Electric field __Electric force __Electric current __Electric circuit How electric charges are drawn towards or pushed away The continuous flow of electric charges through material A complete unbroken path through which electric charges can flow Region around a charged object (proton, electron) where electric force is exerted

Bell Work 4/29/14 OPEN YOUR BOOK to page 36. Neatly, recreate diagram A, B, and C (write the verbal explanation and pay attention to vector arrows) http://phet.colorado.edu/en/simulation/electric-hockey

Bell Work 4/15/15 Why can we not use lightning as a source of current electricity? http://app.discoveryeducation.com/player/?assetGuid=33a52d2a-2e47-4445-8278-555fd7eb7e2d&fromMyDe=0&isPrinterFriendly=0&provider=&isLessonFromHealth=0&productcode=US&isAssigned=false&includeHeader=YES&homeworkGuid= We can not control the flow of electrons. All the energy is released immediately.

Bell Work 4/16/15 What three components do you need to have a complete circuit? Give three examples of each 1. Power Source (push/force volts) battery, generator, solar cell 2. Conductor (transfers electrons)-wires, nerves, metals 3. Resistor/Load (uses the electricity)- refrigerator, fan, lights, dryer, etc.

Bell Work 4-17-15 Why do conductors allow ELECTRONS to move throughout more easily than insulators? The atoms that make them up have tightly bound electrons. The atoms that make them up have more electrons The atoms that make them up have loosely bound electrons The atoms that make them up have less electrons

Bell Work 4-20-15 The third prong of an appliance is connected to ? The line coming from the electric plant The ground wire The line going to the electric plant A circuit breaker or fuse - Appliances need to be grounded so that charges are able to flow directly from the circuit into Earth in the event of a short circuit or power surge

Bell Work 4-23-15 Using your notes for Ohm’s Law. What happens to the current if you??????? Increase Voltage Increase Resistance Current will _______ Decrease Voltage Decrease Resistance

6 Craziest Extinctions ASAP DAY https://www.youtube.com/watch?v=wissIOikrqc

Bell Work 4/27/15 In a series circuit, the more light bulbs that are added, the bulbs become? Dimmer Hotter Brighter More Resistant For a given voltage being pushed, more RESISTORS decrease the flow of the electric current

Bell Work April 28, 2015 What TWO factors will determine your households energy bill each month? Power and Volts used Power and Amps used Power and Time Power and Resistance -So turn off the lights, shut the fridge, shut the door, unplug appliances not being used, You’ll pay one day

Bell Work 4/29/15 If your household’s electric meter was at 2,982 kWh on February 12 and 3,292 kWh on March 12. How much was the energy bill for that month? Assume energy cost is about $.85 cents per kWh. $263.50 for that month

Bell Work April 30-2015 A microwave has a power rating of 1000 W and uses the standard voltage in your household (120 V). What is the current through the microwave? Current ___________________

Bell Work 5/4/15 What do power companies use to transfer electricity over long distances via power lines? Converters Capacitors Transcoders Transformers http://www.youtube.com/watch?v=tUO3o5JTGhQ

Bell Work 5/5/14 Looking at your diagram of step-up/step-down transformers When the voltage is decreased by a step-down transformer, is energy (POWER) destroyed in the process? No, even though the voltage decreases, the current will increase POWER = VOLTAGE X CURRENT

Bell Work 5-23-14 Make a list of technology or items that use an electromagnet to operate.

Bell Work 5-22-14 Does your cell phone have a strong enough electromagnet (magnetic field) to scramble a hotel key card? Explain…… MOST likely, it is either a weak magnetized code caused by the repeated use of being programmed, OR faulty reader scanning code to begin with. Although highly unlikely it is still possibly plausible http://community.discovery.com/eve/forums/a/tpc/f/7501919888/m/2761911929

Bell Work 3/7/11 Get out you Electromagnet Lab Investigation Look at your data In your composition book discuss the following prompts What factors either strengthened or weakened your electromagnet? Of the items tested what did they have in common….why magnetic attraction? What do you know now that you didn’t get before investigating?

Bell Work 4-4-13 Note Book Check? What is the question to the bell work on Feb. 11, 2013 Write the ANSWER to the bell work on 1/7/13 3. For the “Star Cycle” what stage was the star in for No. 3 4. Write out learning target J 5. Write out learning target R

Bell Work 4-15-13 The brake light on an automobile is connected to a 12-volt battery. If the resulting current is 0.40 amps, what is the resistance of the brake?.........remember OHM’s LAW…………… SHOW YOUR WORK http://player.discoveryeducation.com/index.cfm?guidAssetId=531a7de4-677f-4c49-a9fe-75bb84c9df10&productcode=US&CFID=438348&CFTOKEN=28068096

Bell Work 4/24/13

Bell Work 4/29/13 List types of technology, in the medical field, used to examine the anatomy of a patient? Do you know what type of energy it uses?

Bell Work 4/19/12 Explain how the following demonstration would represent a power plant and electricity being generated

Bell Work 2/10/11 To produce an electric current, charges must flow continuously from one place to another. Which of the following provides an unbroken path for charges to flow? A series circuit A parallel circuit A complex circuit All of the above

Bell Work 4-1-10 YOUR QUIZ Write every learning target since the beginning of the year Explain how or why you understand the learning target (USE COMPLETE SENTENCES) Diagram each circuit and explain the flow of electrons (series, complex, parallel) APRIL FOOLS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!