Unit 1: Playground Forces Concept 1.3: Magnetic Force (Activities 1-4) wonder Vocabulary ● ● ● ● ● ● ● ● attract contact electromagnet force magnetic magnetic field pole repel OBJECTIVES 01 I can identify how magnets affect different objects that are nearby. 03 I can explain magnetism on small and large scales. 02 04 I can describe the magnetic fields surrounding magnets and predict how magnets will interact with each other. I can question how the strength of a magnet is changed if a variable is changed. Activity 11 Magnets and Metals Quick Code: intl3067s P. 122 Look at the image and watch the video. Then, discuss the questions. Activity 11 Magnets and Metals Quick Code: intl3067s P. 123 Look at the image and watch the video. Then, discuss the questions. What types of materials are attracted to magnets? Why is it helpful to have a magnet at a junkyard? Activity 11 What types of materials would the magnet pick up? What would be left behind? What might the junkyard do with the picked-up materials? Is there another place a giant magnet would be helpful? • • • • The magnet would pick up metal objects made of iron. Non-metal objects such as plastic and glass would be left behind. The junkyard could send the materials for recycling. A giant magnet might also be useful in trains that ride on a magnetic field. Activity 12 Magnet Attraction Quick Code: intl3068s P. 124 Activity 12 Quick Code: intl3068s P. 125 Magnet Attraction Magnet Attraction Read the text about magnetic attraction. Then, circle the pictures of things that can be sorted with a magnet. Cereal Toy Cars Blocks Activity 15 Size of Force Quick Code: intl3071s P. 132 Read the text about the force of magnets. Then, underline which things you observed during your investigation in the previous activity. Activity 15 Size of Force Quick Code: intl3071s P. 133 Electromagnet Activity 15 What else could affect the number of paper clips we can pick up? • The strength of the magnet identify the distance between the magnet and the paper clips. • The closer the distance, the more paper clips could be picked up.
