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Investigating Density Currents
Source Institutions
In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).
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Magnet Mania
Source Institutions
In this activity, learners explore the relationship between electric charges and magnetic fields.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-650.gif?itok=icGlDqOX)
Gel Electrophoresis
Source Institutions
In this activity, learners simulate the process of DNA fingerprinting by using electricity to separate colored dyes.
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Glowing Pickle
Source Institutions
In this activity, high voltage is applied across a pickle to emit a yellow glow. This activity should only be conducted by skilled adults and is best suited as a demonstration.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-713.jpg?itok=_doRC-Bm)
Short Circuit
Source Institutions
In this activity about electricity, learners explore what happens when you blow a fuse.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-840.gif?itok=3OcQsasE)
Motor Effect
Source Institutions
In this activity about electricity and magnetism, learners examine what happens when a magnet exerts a force on a current-carrying wire.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-288.png?itok=zeWJSTQH)
Seas in Motion
Source Institutions
In this outdoor, beach activity, learners use tennis balls, water balloons and other simple devices to investigate the movement of waves and currents off a sandy beach.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-198.jpg?itok=TX3E66U-)
Dancing Compasses
Source Institutions
Learners use compasses to detect the magnetic field created by current moving through a wire. This is one of four activities learners can complete related to PhysicsQuest 2008.
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Piezoelectric One-Way Remote
Source Institutions
In this activity, learners construct a device out of a piezoelectric igniter, like those used as barbecue lighters.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-733.gif?itok=iy10y1nN)
Cake by Conduction
Source Institutions
In this demonstration, cook a cake using the heat produced when the cake batter conducts an electric current.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-870.jpg?itok=3oGHfmU3)
Yogurt Cup Speakers
Source Institutions
Learners build a simple electromagnet, then use this electromagnet to transform a yogurt container into a working speaker. They can connect their speaker to a radio and listen as it transmits sound.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-725.gif?itok=zdVEcvCV)
Simple Spinner
Source Institutions
In this activity, learners create a tiny electric, motorized dancer. Learners use the interactions of magnetism and electric current to make a wire spin, while displaying the Lorentz Force in action.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-720.gif?itok=e9gV0ZmZ)
Circles of Magnetism IV
Source Institutions
In this activity related to magnetism and electricity, learners observe as two parallel, current-carrying wires exert forces on each other.
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Shake It Up!
Source Institutions
Learners drop a magnet through a coil of wire to create electric current in a circuit. LEDs in the circuit allow learners to detect the direction of current flow.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-196.jpg?itok=WUpxXXeL)
Magnet Powered Pinwheel
Source Institutions
Learners use the current flowing in a wire to create a magnetic field that turns a magnet. Learners can use this property of electromagnetism to build a magnet-powered pinwheel.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-722.jpg?itok=m0lIs7MN)
Charge and Carry
Source Institutions
In this activity about electricity, learners produce a spark that they can feel, see, and hear. Learners rub a Styrofoam plate with wool to give it an electric charge.
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Circles of Magnetism I
Source Institutions
In this activity related to magnetism and electricity, learners create a magnetic field that's stronger than the Earth's magnetic field.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-392.gif?itok=8ejVQPiy)
Electricity: Fruit Batteries
Source Institutions
In this activity, learners create a battery from fruit. This activity helps learners explore electricity, electrochemistry, and series circuits as well as the process of scientific inquiry.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-642.jpg?itok=YzjZSwZa)
Penny Battery
Source Institutions
In this activity, learners light an LED with five cents. Learners use two different metals and some sour, salty water to create a cheap battery.
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Magnetic Suction
Source Institutions
In this activity about electricity and magnetism, learners discover how a doorbell works. A coil of wire with current flowing through it forms an electromagnet that acts similar to a bar magnet.