Make Science Fun - Stage 5 - Home School Science Day - Microwave Dissection

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33 Wycombe Rd

Terrigal, NSW 2260

Australia

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Description

Stage 5 - Years 9 + 10 - Ages 14 to 16 - Home School Science Day

– Microwave Dissection

Date: Wednesday 24th April 2019

Time: 9:00 am to 3:00 pm

Ages: Stage 5 – Years 9+10 Ages 14 to 16

Location: 33 Wycombe Road Terrigal

Cost: $60 per student ($10 more than normal due to extra cost of

Equipment and materials)

Numbers: 12 students


Students to bring:

Lined exercise book (preferably their Science book)

Pencil Case with pens, pencils, ruler etc.

All food and drink for themselves for the day (no peanuts, eggs or allergens)

The intention of the day will be to follow the activities as indicated below.

Note: The 240 volt power leads will be removed prior to day and at NO stage will students be using or exposed to 240 volts.

8:45 am

Arrival and Welcomes

9:00 am

Begin Dismantling.

Properties of metals.

Corrosion.

Electrical Safety.

Conductivity of different materials.

Strip electrical lead.

Discussion/Notes on properties of copper.

Practical: Compare conductivity of copper to nichrome wire

Remove outer metal case. Fold.

Discussion/Notes on Iron, Carbon and Steel plus properties of metals.

Paint protection to prevent corrosion. Also look at the process of galvanization to prevent corrosion

Look at electrical connections and discuss colours of wires (blue, brown and green)

Look at earthing and electrical safety by visiting circuit board and ground peg.

Remove fuse and practically test different fuses. Discuss the importance of fuses.

10 am

Second breakfast!

Students supply all their own food and drink for the day.

10:15 am

Continue Dismantling.

Lightglobes and series circuits.

Kinetic particle theory.

Remove Lightglobe. Study lightglobe. Use 12 volt light globes to learn how globes turn electrical energy into light energy. Setup simple series circuits.

Remove door switches and investigate normally open and normally closed switches and how they operate. Practically add switches in series and parallel circuits and draw circuit diagrams.

Remove heat safety switch. Include switch in 12 volt globe series circuit and use a candle to heat switch demonstrating its function.

Study the bimetallic disc and determine how heat switch operates.

Discuss expansion of metals and kinetic particle theory of matter

11 am

Recess

Students supply all their own food and drink for the day.

11:15 am

Continue Dismantling.

Circuit diagrams.

Electric motors.

Magnetron.

Electromagnetic radiation

Remove cooling fan. Study electric motor.

Remove magnetron and discuss function.

Discuss electromagnetic radiation and protection from em radiation.

Remove food turning motor and use it as a generator. Discuss energy transformations.

Demonstrate Cathode Ray Tube and production of x-rays

12:30 pm

Lunch and handball

Students supply all their own food and drink for the day.

1:00 pm

Jacob’s Ladder and Fractal Lichtenberg

Burning

Jacob will safely demonstrate a Jacobs ladder powered from a microwaves transformer.

We will also do some Lichtenberg burning using the transformer.

2:00 pm

Afternoon Tea

Students supply all their own food and drink for the day.

2:15 pm

Waves

Frequency, Standing waves, velocity of waves

Wave theory. Velocity, Wavelength and Frequency

Use a working microwave to determine the speed of light!

3:00 pm

Departure

Students will be working in groups of 3 (one microwave per group) and will have access to a range of Science equipment found in School Science Labs including Low Volt Power Packs and associated student electrical equipment.

Make Science Fun Pty Ltd has full public liability insurance to cover Home School Science days like this.

Rachel Strickling (or Esther Strickling) will be the female adult on site at all times.

NSW Science Syllabus Outcomes addressed

Physical World

Outcomes

A student:

applies models, theories and laws to explain situations involving energy, force and motion
SC5-10PW

explains how scientific understanding about energy conservation, transfers and transformations is applied in systems SC5-11PW

Content

PW1 Energy transfer through different mediums can be explained using wave and particle models. (ACSSU182)

Students:

  1. explain, in terms of the particle model, the processes underlying convection and conduction of heat energy
  2. identify situations where waves transfer energy
  3. describe, using the wave model, the features of waves including wavelength, frequency and speed
  4. explain, using the particle model, the transmission of sound in different mediums
  5. relate the properties of different types of radiation in the electromagnetic spectrum to their uses in everyday life, including communications technology
  6. describe the occurrence and some applications of absorption, reflection and refraction in everyday situations

PW3 Scientific understanding of current electricity has resulted in technological developments designed to improve the efficiency in generation and use of electricity.

Students:

  1. describe voltage, current and resistance in terms of energy applied, carried and dissipated
  2. describe the relationship between voltage, resistance and current
  3. compare the characteristics and applications of series and parallel electrical circuits
  4. outline recent examples where scientific or technological developments have involved specialist teams from different branches of science, engineering and technology, eg low-emissions electricity generation and reduction in atmospheric pollution
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Location

33 Wycombe Rd

Terrigal, NSW 2260

Australia

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