Scientists' Consensus Ideas - Ideal Responses
I. The Magnetic Interaction2. In Exploration #1, a second magnet either moved toward or away from the first magnet. After the first magnet was turned over, the 2nd magnet moved the opposite way.
3. Exploration #2 supports this idea. We observed that when a magnet was moved close to nickel and steel (iron), they moved towards the magnet.
4. In Exploration #2 we observed that the interaction was the same whichever side of the magnet was used.
5. U1C1Act.3 - The Paper Clip Experiment (The larger the magnet, the larger the distance from which a paper clip will move toward a magnet.)
II. The Electic-Charge Interaction
2. In Exploration #1, when we charged up a balloon we found that it attracted objects (both metal and non-metal) with no charge.
3. In Exploration #2, when we brought two pieces of charged tape near each other, each with the same charge, the repelled each other. They did this even when we turned one or both pieces of tape around.
4. In Exploration #2, when we brought two pieces of charged tape near each other, each with a different charge, they attracted each other. They did this even when we turned one or both pieces fo tape around.
5. In Exploration #1, when we brought small pieces of metal (aluminum foil) and non-metal (paper) near a charged object (balloon), they were both attracted to the the charged object.
III. The Electric-Circuit Interaction
1. In Explorations #1 and #3, bulbs lit up when they were connected in a complete loop to a battery. Bulbs did not light up when the circuit loop they were in was broken.
2. In Exploration #1, the bulb lit up when the circuit loop was completed.
3. Conductors: iron nail, steel washer, aluminum foil, pencil lead
Non-conductors: paper, plastic pen cap, glass marble, rubber eraser, wood, cotton clothing, clay, ceramic mug
5. In Exploration #4, when we put more batteries in the circuit, the bulbs lit brighter. Also, the more batteries in the simulator circuit in Exploration #5, the greater the elctric current.
6. In Exploration #3, when we unscrewed a bulb from its socket, all the bulbs went out in the series circuit, but only the unscrewed bulb went out in the parallel circuit.
IV. Electromagnets and Electromagnetic Interaction
3. In the experiment done in Activity 5, the electromagnet (a nail with a wire wrapped around it) could pick up more washers when either the current in the wires was increased (more cells), the number of turns of wire wrapped around the nail was increased, or the coils were compressed closer together on the nail. The electromagnet was also stronger when the coil of wire was wrapped around a nail than when it wasn't.
posted by The Professor @ 5:18 PM
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