# With the person youre sitting next to decide

• Slides: 13

● With the person you’re sitting next to, decide who has longer hair! ○ Longer hair person = Magnets, Short hair person = Electricity ● One student writes electricity and the other writes magnetism. ● On my signal list one thing you know about the topic. ● Switch and write another thing about the topic. Magnetism Electricity

Create a class list of what we know about electricity and magnetism. Class List

Title pg. 61 L- Junk Yard Machine https: //www. youtube. com/watch? v= Fq. T 2 u. Oa 1 -d 0&t=20 s (top half) https: //www. youtube. com/watch? v= XBWy 9 gz. GGd 4 (bottom half)

Title pg. 61 R- Junk Yard Machine Model Create an initial model of how the junk yard machines work (top half) Models should include a 1. Sketch 2. Labels 3. Explanation

Create an electromagnet Using the following materials: Nail Wire Battery

62 L Is the electromagnet a magnet? What is your evidence?

62 L How could you create a stronger electromagnet? Test one variable at a time

62 L/R How could you create a stronger electromagnet? Test one variable at a time. . . Example: How many staples can you lift up 1 Battery 10 loops 1 Battery 20 loops

Title pg. - Junk Yard Machine Model Create a final model of how the junk yard machines work (bottom half) Models should include a 1. Sketch 2. Labels 3. Explanation

What is an electromagnet? Notes 62 L/R temporary magnet made by wrapping a current-carrying wire around an iron core

62 L/R How do the number of coils affect the number of pins attracted to the electromagnet?

62 L/R How does the size of the current affect the number of pins attracted to the electromagnet?

What are two ways to make a stronger electromagnet? 62 L/R - increase the number of coils -increase the amount of current