Bozeman Science
Thinking in Causation - Level 7 - Scale Mechanisms in Complex Systems
In this video Paul Andersen shows conceptual thinking in a mini-lesson on scale mechanisms within complex systems. TERMS: Cause and effect relationships - one event that gives rise to another event Complex systems - a system composed of...
Khan Academy
Khan Academy: Discovery of Magnetism
Our ancestors noticed that certain rocks were attracted to each other. They also noticed that this force could be transferred onto certain metallic objects. [1:09]
Khan Academy
Khan Academy: Discovery of Magnetic Fields
Magnetic materials seem to have two sides (we could call them poles). Depending on orientation, they can be attractive or repulsive. What is the shape of the force between fields? [1:07]