Difference between revisions of "TNSB - 7 - Science :: Electricity"

[Contributor - Rini Jose]

https://drive.google.com/open?id=1GqaKkjUmzYB2a0KAuKL8-8p17mPCCCFu (English)

https://drive.google.com/open?id=1qjRixRTkaDxT3IkfiELg1xDJ_ym7UN_N (Tamil)

[Contributor - Kripa S]

https://www.youtube.com/watch?v=QZPURSF5iH4 (electric circuit)

[Contributor - Gayathri Arun Kumar]

Lesson Plan version 1.1 videos

https://www.youtube.com/watch?v=QzHdeA-2ARI (Electricity)

https://www.youtube.com/watch?v=czeMTuxprpo (Function of a generator)

https://www.youtube.com/watch?v=e4qEkqWVDfE (electric cell and its types)

https://www.youtube.com/watch?v=jrdK4c6XlsE (Basic electrical symbols)

https://www.youtube.com/watch?v=mro7lJfSGc8 (Conductors and insulators)

https://www.youtube.com/watch?v=05aDyPtca_g (Electric fuse)

https://www.youtube.com/watch?v=YJl13XKmL-0 (magnetic effect of electric current)

https://www.youtube.com/watch?v=6hQ78YzQvcU (electro magnet)

https://www.youtube.com/watch?v=2Y80QG-F7Fs (Electric door bell)

[Contributor - Kripa S]

http://images.tutorvista.com/content/thermal-chemical-currents/copper-sulphate-electrolysis.jpeg (effect of electricity)

http://mste.illinois.edu/nwaight/ohm/images/animated%20gifs/circuit.gif (electric current)

https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcTHPn0LtRIHW3Ufozf_4bjMv4leSSMrU-Ix_6caXdFT96Y67Sjr (electricity)

http://www.ekshiksha.org.in/images%20of%20Electricity_and_Circuits_VI/6.png (electric cell)

[Contributor - Kripa S]

1. If there were no electric supply for a month, how would that affect your day to day activities and others in your family? Present it in the form of a story or a play.

2. https://www.youtube.com/watch?v=Zy_Jvmj6w2U (salt water battery)

[Contributor - Gayathri Arun Kumar]

Lesson Plan version 1.1 activities

1. https://www.youtube.com/watch?v=a1njBrbZs3M (Tamil- Activity)

2. Press the lemon on the table to make it soft. Twist one end of a plastic coated wire around the copper wire and push the copper wire into the lemon. Connect the other end of the wire to one terminal of the galvanometer. Wind one end of the other wire around an iron nail and push the nail into the lemon at a distance of 3 cm from the copper wire. Connect the free end to the other terminal of the galvanometer.

3. attach a piece of wire to each board pin. I push one pin into the flat side of the wood. I push the second pin through the end loop of the paper clip and into the board. The drawing pins are about 1cm apart. To test the switch, I connect the free end of one of the wires to the positive terminal of the battery. I use the free wire to connect the negative terminal of the battery to the bulb holder. I connect the free wire on the switch to the free screw on the bulb holder.

4. strip the insulation at both ends of the three wires so that about 1cm of the metal portion is exposed. I connect the negative end of the cell to one end of the key with a wire and the other end of the key to the threaded portion of the bulb with another wire. I secure both ends with insulation tape. I connect the positive end of the cell to the bottom portion of the bulb with the third wire. I close the key and allow the current to flow for some time and then touch the bulb. I allow the current to flow for a longer time. Then I connect two cells in the circuit so that more current flows through the bulb

5. Take an empty matchbox. Place a small compass needle inside the matchbox tray. Wind an electric wire a few times around the tray. Now connect the free ends of the wire to a battery through a switch. Keep the switch in the off position. Bring a bar magnet near the compass needle. Allow the current to flow by keeping the switch in the ON position. Move the switch to the OFF position. Does the compass needle come back to its initial position?

6. wind a copper wire around an iron nail. I connect one end of the wire to one end of the battery and the other end to the other terminal of the battery through a key. I bring some pins near the nail after closing the key. I now open the key and again bring the pins near the nail. I repeat the activity by increasing the number of turns. I repeat the activity by increasing the amount of current passed (by using three or four cells).

[Contributor - Ramkee]

https://drive.google.com/open?id=0BzNF2YyqQxJ-d0VtSkNwSVpNd2M

[Contributor - Gayathri Arun Kumar]

Lesson Plan version 1.1 PPT

https://drive.google.com/open?id=1zH8jx1uhw2pHLIDLiiXGHN_lUdCTCdBp

[Contributor - Preethi Saravanakumar]

[Contributor - Ramkee]

https://drive.google.com/open?id=0BzNF2YyqQxJ-Mk1iTlJkLWlYd1k

[Contributor - Aishwarya V H]

https://drive.google.com/open?id=1r7eNIyItRdB4dvMGfI6Jphgt32_fxgPU (Question Bank - English)