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Download 4th Grade Physical Science- Magnetism and Electricity CA Focus
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4th Grade Physical Science- Magnetism and Electricity CA Focus Questions Investigation 1: The Force Part 1: Magnets and Materials • What is a general rule about what magnets stick to? • What happens when two magnets come together? Part 2: More Magnetic Properties • How can you make a temporary magnet? Part 3: Breaking the Force • What happens to the strength of attraction between two magnets as the distance between them increases? Part 4: Detecting Magnetic Fields • What is a compass and how can you one? Investigation 2: Making Connections Part 1: Charge • What is a general rule for how charged objects interact? Part 2: Lighting a Bulb • How can you make a circuit that will light a light bulb using just three components—one Dcell, one light bulb, and one wire? • What kinds of energy conversion did you observe when you made electric circuits? Part 3: Making a Motor Run • How an you make a circuit that will run a motor? • What does a motor do in a circuit? a switch? Part 4: Conductors and Insulators • How do you know if a material is a conductor or an insulator? • How are objects that conduct electricity and objects that stick to magnets alike? How are they different? Part 5: Mystery Boards • How can you figure out where the wires are in the mystery board? Investigation 3: Advanced Connections Part 1: Building Series Circuits • Why do you think the two lamps are dim in a series circuit? • How you make the two lights in a series circuit brighter? Part 2: Building Parallel Circuits • How can you light two bulbs brightly with just one battery? • How are series and parallel circuits the same? different? Part 3: The String-of-Lights Problem • How can you design a string of lights that would not all go off when one lightbulb burns out? Investigation 4: Current Attractions Part 1: Building an Electromagnet • How can you make a magnet that turns on and off? Part 2: Number of Winds • How does the number of winds on an electromagnet core affect the strength of the magnetism? Part 3: More Electromagnets • How else can you change the strength of an electromagnet? Investigation 5: Click It Part 1: Reinventing the Telegraph • How is the telegraph you made like the one Morse made? Part 2: Long-Distance Messages • How can you connect two telegraphs together to send long-distance messages?
