Listing all results (231)

Episode 216: Energy Changes

This learning episode, from the Institute of Physics, looks at kinetic energy, work and velocity in relation to the braking distance of a vehicle.

Two experiments are included, both of which connect work done in braking to the initial kinetic energy of the decelerating vehicle.

The activities...

Episode 217: Conservation of Energy

From the Institute of Physics, although concerned with conservation of mechanical energy, this episode extends the principle to its wider context in order to give the students a full appreciation of the overarching nature of the principle when they meet it in different situations.

The activities include:...

Episode 222: Impulse of a Force

This learning episode, from the Institute of Physics, uses demonstrations and worked examples to examine the forces involved in changing momentum. It introduces the concept of impulse.

The activities in the learning episode include:
* showing that impulse equals change in momentum
* a...

Episode 224: Describing Circular Motion

From the Institute of Physics, this learning episode introduce students to the importance of circular motion and the need for a centripetal force to keep an object moving along a circular path.

The activities include:
* observing circular motion
* whirling bucket and centripetal force

Episode 227: Hooke’s Law

In this learning episode from the Institute of Physics, students use Hooke's law to demonstrate the strength and stiffness of materials when subject to linear tensile or compressive forces.

The activities include:
• recap of Hooke's law
• explaining tension and extension in a variety of...

Episode 102: Current as a Flow of Charge

From the Institute of Physics, these activities allow students to understand the idea of electric charge and its relationship to a flow of current.

There are a range of activities and these include:
• using an analogy to represent the movement of charge
• defining current and the coulomb...

Episode 103: Currents and Charge Carriers

From the Institute of Physics, these activities present a range of examples involving different types of charge carrier and links the measured current to rates of flow of charge.

The activities consist of a series of demonstrations which could be set up before the lesson. These include:
• considering...

Episode 104: Drift Velocity

From the Institute of Physics, this learning episode shows that charge carriers in good conductors usually move very slowly. It illustrates the derivation and use of the equation I = nAvq.

A range of activities include:
• viewing the movement of permanganate ions in an electric field

Episode 106: Electrical Power

From the Institute of Physics, in this learning episode, students calculate electrical power and through discussion, review their understanding of:
• current
• potential difference
• electromotive force (emf)
• charge
• drift velocity

Students are reminded of the idea that power...

Episode 108: Resistance

From the Institute of Physics, this learning episode provides a quantitative definition for resistance (R = V / I) which reinforces the qualitative notion that more resistance means less current. It looks at Ohm’s law, describing that this is not the same thing as the definition of resistance.



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