Khan Academy
Khan Academy: Discovery of Magnetism: Compass Build (Magnet Orientation)
When making a compass, does it matter if we stroke the needle with the North vs. South pole of the magnet? Why? [1:07]
Khan Academy
Khan Academy: Discovery of Magnetic Fields: Magnet Near Compass
An experiment exploring the effect of a permanent magnet on a compass. What is going on? [1:05]
Mocomi & Anibrain Digital Technologies
Mocomi: Discovery of Magnets
Animated video explores the discovery of magnets.
Khan Academy
Khan Academy: Neutralize a Compass
This video demonstrates how to neutralize a compass using two needles. How could this help us later? Why does this work? [:46]
Khan Academy
Khan Academy: Floating Magnet
Watch this demonstration to determine whether you can use a magnet as a compass? How can you find the North vs. South pole? [:33]
Khan Academy
Khan Academy: Inverse Cube Law (Method of Oscillation)
In this video, we compare the speed of compass oscillation vs. distance from a magnet. What kind of relationship do we observe. Is it linear? [2:08]
Khan Academy
Khan Academy: Earth's Magnetic Field (How to Measure)
How can we describe the strength of the Earth's magnetic field using a magnet and a compass? What does this tell us? Watch this demonstration to find out. [1:16]
Khan Academy
Khan Academy: Compass: Which Way Is North?
This video demonstrates the process of making a compass: How would you know which way is north if you had no reference? Can the direction of stroke alone tell you this? Are you sure? [1:00]
Khan Academy
Khan Academy: Compass Build (Stroke Direction)
This video demonstrates the process of making a compass: Does the direction in which we stroke the needle determine the final orientation? [1:13]
Khan Academy
Khan Academy: Compass Build (Magnet Orientation)
This video demonstrates making a compass: does it matter if we stroke the needle with the North vs. South pole of the magnet? Why? [1:06]