ELECTRICITY AND MAGNETISM Lesson 7 Making a Temporary

Opener ❖Suppose someone says, “The Earth has a dipole magnetic field because there is

Opener ➔How is this model similar to the real Earth? How is this model

Opener The dipole structure is the effect of _______________. Earth’s magnetic field is caused

Explore ➔What did the permanent magnet do to the nail to make it temporarily

Explore Demo/Activity: Temporary Magnet Using Stroke Method 1. What did the permanent magnet do

Explore Demo: Electromagnet 2. What did the electrical circuit do to the nail to

Explore Optional Demo: Electromagnet Video 2. What did the electrical circuit do to the

Explain / Elaborate ➔What do you think an electric current is? How is it

Explain / Elaborate ➔Is electricity a form of matter or a form of energy?

Extend ❖How does an electromagnet nail gun work? ❖How does Magnetic Resonance Imaging (MRI)

Exit Card ❖Suppose someone says, “The Earth has a dipole magnetic field because there

Exit Card ❖What are some major differences between this model and the one from

Homework ❖How are electrons and electricity related? ❖How can electrons and magnetic fields be

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ELECTRICITY AND MAGNETISM Lesson #7: Making a Temporary Magnet © IMPACT SCIENCE EDUCATION 2019 impactscience. co LM used by permission

Opener ❖Suppose someone says, “The Earth has a dipole magnetic field because there is a large bar magnet inside it. ” Draw a model of this hypothesis. ❖Do you think this hypothesis could be correct? Explain.

Opener ➔How is this model similar to the real Earth? How is this model different from the real Earth? CC 0 Zureks - Wikimedia

Opener The dipole structure is the effect of _______________. Earth’s magnetic field is caused by _______________. A magnetic field is created when _______________.

Explore ➔What did the permanent magnet do to the nail to make it temporarily behave like a magnet? ➔What did the electrical circuit do to the nail to make it temporarily behave like a magnet? Accept all ideas at this point.

Explore Demo/Activity: Temporary Magnet Using Stroke Method 1. What did the permanent magnet do to the nail to make it temporarily behave like a magnet?

Explore Demo: Electromagnet 2. What did the electrical circuit do to the nail to make it temporarily behave like a magnet?

Explore Optional Demo: Electromagnet Video 2. What did the electrical circuit do to the nail to make it temporarily behave like a magnet? Click link below: Lesson 7 resource Electromagnet & Paper clips video

Explain / Elaborate ➔What do you think an electric current is? How is it different from static electricity?

Explain / Elaborate ➔Is electricity a form of matter or a form of energy? ➔What was the effect of static electricity? What do you think might be the effect of an electric current?

Extend ❖How does an electromagnet nail gun work? ❖How does Magnetic Resonance Imaging (MRI) work, and when is it useful? When can it not be used?

Exit Card ❖Suppose someone says, “The Earth has a dipole magnetic field because there is a large electrical current inside it. ” Draw a model of this hypothesis. ❖Do you think this hypothesis could be correct? Explain.

Exit Card ❖What are some major differences between this model and the one from the beginning of the lesson, showing a bar magnet inside Earth? Choose all that apply. A. The structure of Earth’s interior B. The material of Earth’s interior C. The shape of the magnetic field D. The way the magnetic field affects objects (like a compass) E. The stability of the magnetic field over the history of the Earth

Homework ❖How are electrons and electricity related? ❖How can electrons and magnetic fields be related?