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Activities For Teachers ammeter amount of illumination armature atom battery beaker Block body boiling point calories capacitor cells in series Celsius charged objects Chemistry of Matter clips coil color combined resistance compass needle Connect a voltmeter convex lens current electricity current-carrying conductor curved mirrors cycles per second Determine devices direct current disk distance dry cell electric energy electromagnetic radiation electromagnetic spectrum electrons external circuit freezing point frequency Fundamental Concepts gases glass grades heat energy images formed insulated joules lamp Leyden jar liquid longitudinal waves magnetic field material mechanical energy medium metal conductor meter motion move N-pole nail optional Learning Activities parallel circuit particles perpendicular Place plane mirror point source pole potential difference potential energy protons pupils reflected refraction resistor rubber series circuit shown solid sound wave source of light speed of sound sphere surface temperature terminals thermometer tion transfer transverse waves tThe tube tWhen uncharged voltmeter wavelength wire