Answer Happy

Magnetic Field Activity 1. Move the compass around the bar magnet. a. Which pole of the magnet does the red compass needle point towards? b. Click "Flip Polarity" in the right side menu. Which pole of the magnet does the red needle point towards now? c. Write a concluding statement about which pole the red part of the needle points towards. 2. Click "Reset All" in the right side menu. Select "Show Field Meter" in the right menu. A blue box will appear that measures the magnetic field around the magnet "B". a. As you move the field meter does the field strength increase or decrease as you move closer to the magnet? b. Move your meter so that it is about 4 cm away from the North end of the magnet. What is the magnitude of the field strength? C. Move your meter so that it is about 4 cm away from the South end of the magnet. What is the magnitude of the field strength? d. Write a concluding statement about the magnitude of the field strength at the same distance from the north and south poles. e. How is the field strength represented in the simulation without the use of the field meter?
3. What do the compass needles drawn all over the screen show? 4. Label the poles of the magnet and draw the lines of magnetic field inside the magnet clearly marking the direction of the field. Click on the bar See inside Bar on the right side menu to check your predictions. Were your predictions correct? 5. Move the compass along the screen in a semicircular path above or below the bar magnet from one end of the magnet to the other. Describe what is happening to the compass needle. 6. How many complete rotations does the compass needle make when the compass is moved all the way around the bar magnet? 7. True or False: • The red arrow of the compass points in the direction of magnetic field. • The vector of magnetic field inside the bar magnet is horizontal. • A compass can be used to determine the magnitude of magnetic field.