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# Gravitational Fields, Electric Fields, Magnetic Fields

This Area of Study looks at three fields: Gravitational, Electric and Magnetic. The teaching resources, classroom activities, assessment ideas and IT applications are grouped under each type of field.

# Gravitational Fields

## Assessment Ideas

 Type Filename Filesize Assessment Task: Operation of a Device for Fields Area of Study 49.2 kB Assessment Task: Explanation of a Phenomenon for Fields Area of Study 49.2 kB

## IT Applications

 Type Filename Filesize Planet Spreadsheet 23.6 kB Planet Documentation 10.2 kB An Excel Spreadsheet 'Planet' contains radius and period data of the moons of the solar system. This documentation contains a set of tasks and questions for the Excel spreadsheet. The students investigate how the moons' velocities and accelerations vary with distance from the planet. Values for R cubed /T squared can be obtained for each planet and subsequently the mass of each planet determined.

# Electric Fields

## Audiovisual Resources

It is recommended that teachers should view any video before purchase.

• Marcom Projects: Static Electricity and Electric Charge, Electric Motors & Electric Generators

## Classroom Activities

Possible practical activities include:

• Practical Physics by Gardiner & White: i) Equipotentials and Electric Fields, ii) Electric Fields and Pot'l Diff in Wires
• PSSC Lab Guide: i) Force between two charged spheres, ii) The addition of Electric forces
• Physics Experiments by McKittrick: i) Charge on a rubbed balloon, ii) Electric fields in circuits

 Type Filename Filesize Electric fields: Practical activities 52.2 kB Three experiments: i) Coulomb's Law, ii) Electric field and Potential with teledeltos paper, iii) Electric Field and Potential in a straight wire. Prepared by Dan O'Keeffe, Vicphysics Teachers' Network. Coulomb's Law Expt: Quick and Simple 80.4 kB A class experiment to measure the value of the exponent of r in Coulomb's Law and the quantity of charge on a charged rod. The experiment uses a top loading balance, a laboratory jack and a charged rod. Prepared by Vicphysics Teachers' Network. Spreadsheet templates for the Coulomb's Law Expt: Quick and Simple 28.7 kB Templates for Coulomb's Law expt (quick and simple). Includes i)the basic experiment, ii) the decay of the charge on the rod and iii) advanced experiment using the adjusted readings using the half life. Prepared by Vicphysics Teachers' Network.

## Assessment Ideas

 Type Filename Filesize Assessment Task: Operation of a Device for Fields Area of Study 49.2 kB Assessment Task: Explanation of a Phenomenon for Fields Area of Study 49.2 kB Revision Problems for Coulomb's Law and Electric Fields 212 kB 30 Questions from Physics exams in the 1970's. Answers included. Compiled by Colin Hopkins, Bialik College.

# Magnetic Fields

## Text Resources

• VCE Physics: Electric Power, 1994, 2nd edn, National Electricity.

## Audiovisual Resources

It is recommended that teachers should view any video before purchase.

• Marcom Projects: Electricity & Magnetism & Electromagnetic devices, Electric Motors & Electric Generators, Power Transmission & Power Consumption

## Classroom Activities

Possible practical activities include:

• Practical Physics by Gardiner & White: i) Magnetic field of acurrent loop, ii) Magnetic field of a solenoid
• Physics Experiments by McKittrick: i) Mangentic force on moving charges

 Type Filename Filesize Worksheets for Unit 3 Electromagnetism 494 kB Worksheets for experiments for Unit 3 Magnetic Fields and Electrical Energy Areas of Study. Forces on Charges 126 kB Describes the magnetic force on moving charges and goes on to look at the effect of the Earth's magnetic field on charges from the Sun and at the Hall effect, which gives us insight into the nature of electric currents as well as many practical applications.

News Stories

 Type Filename Filesize News Stories on Magnetism 30.2 kB Summaries of selected articles from the 'News from the Web' section of the Vicphysics Newsletter. Each summary as a link to the full article. The articles can be used to add context to class discussion or to display within the classroom.

## Assessment Ideas

 Type Filename Filesize Assessment Task: Operation of a Device for Fields Area of Study 49.2 kB Assessment Task: Explanation of a Phenomenon for Fields Area of Study 49.2 kB