Diocesan Preparatory SchoolDiocesan Preparatory School

By:Adrian LoBy:Adrian Lo Tang Pok TinTang Pok Tin Peter LoPeter Lo Christopher YukChristopher Yuk

VS

Is Technology really Is Technology really

““Classic BBQClassic BBQ is is Just Better!”Just Better!”

From our surveys, we found thatFrom our surveys, we found that

Many People are Many People are Biased.Biased.

We conducted a two-part We conducted a two-part experiment.experiment.

Part 1. Part 1. We barbecued some sausages We barbecued some sausages using the using the ELECTRICELECTRICbarbecue Pit.barbecue Pit.

We asked ten people to taste two We asked ten people to taste two samples, and tell which came from samples, and tell which came from the classic barbecue pit, and which the classic barbecue pit, and which came from the electric barbecue pit.came from the electric barbecue pit.

ResultsResults

Correct

Wrong

60% of the interviewed thought they were different!60% 40%

We conducted a two-part We conducted a two-part experiment.experiment.

Part 2. Part 2. We barbecued some sausages. This We barbecued some sausages. This time, we really barbecued them with time, we really barbecued them with both the classic Barbecue pit and both the classic Barbecue pit and the electric barbecue pit.the electric barbecue pit.

We asked some people to tell which We asked some people to tell which of them came from the classic of them came from the classic barbecue pit, and which came from barbecue pit, and which came from the electric barbecue pit.the electric barbecue pit.

ResultsResults

Correct

Wrong67% 33%

67% of the interviewed answered wrongly!

They They Cannot Cannot

Tell!Tell!

Classic BarbecueClassic Barbecue

We We barbecued forbarbecued for 3 3 hours.hours.

We used a bag of We used a bag of CHARCOAL CHARCOAL . $22.90. $22.90

We used a box of We used a box of FIRE FIRE STARTER. STARTER. $8.00$8.00

Total: $30.90Total: $30.90

Per Hour: Per Hour: $ 10.30$ 10.30

Electric BarbecueElectric Barbecue

According to non-According to non-residential electricity residential electricity fees, using fees, using 12,000w of 12,000w of electricityelectricity, we use , we use 12 12 degrees of electricity.degrees of electricity. $11.68/h$11.68/h

Per Hour: Per Hour: $11.70$11.70

Cost

The cost isn’t that expensive.

Air PollutionAir Pollution We used a bottle to We used a bottle to

collect the collect the fumes fumes from the electric from the electric and classic and classic barbecue pits.barbecue pits.

Then we added Then we added limewaterlimewater..

We shook them We shook them thoroughly.thoroughly.

Classic

ElectricThe limewater in the ‘electric barbecue fumes’ bottle is slightly clearer.

Solid PollutionSolid Pollution

We weighed the We weighed the rubbish we rubbish we produced after the produced after the electric barbecue electric barbecue and the classic and the classic barbecue.barbecue.

We got the We got the following results:following results: 0

100200300400500600700800900

1000

Wei

gh

t in

gra

ms

ElectricBBQ

ClassicBBQ

Electric BBQ produces much less rubbish.

SpeedSpeedUsing Classic Using Classic Barbecue to Barbecue to barbecue a barbecue a sausage: 32.24ssausage: 32.24s

Using Electric Using Electric Barbecue to Barbecue to barbecue a barbecue a sausage:154.82ssausage:154.82s

0

20

40

60

80

100

120

140

160

Sp

eed

in

sec

on

ds

Classic Electric

Classic Barbecue is faster. However, food barbecued on it is easier to get burnt.

ConvenienceConvenience Classic BarbecueClassic Barbecue

40 minutes of fire starting 40 minutes of fire starting (less if you have skill)(less if you have skill)

Adding charcoal once in a Adding charcoal once in a whilewhile

Electric BarbecueElectric Barbecue

A few minutes of booking, A few minutes of booking, and a few minutes of heating and a few minutes of heating upup

Cannot boil liquids due to Cannot boil liquids due to safety reasonssafety reasons

Can roast (unexpected)Can roast (unexpected)

Affected by electricity supplyAffected by electricity supply

Easy maintenanceEasy maintenance

ConclusionConclusion

There is actually There is actually no no substantial differencesubstantial difference

between Electric barbecue between Electric barbecue and Classic barbecue.and Classic barbecue.

Follow-upFollow-up

We will conduct a survey on whether We will conduct a survey on whether the people would choose electric the people would choose electric barbecue or continue using classic barbecue or continue using classic barbecue, after knowing that they barbecue, after knowing that they are actually the same.are actually the same.

We will research on the fee We will research on the fee collection.collection.

Just for FunJust for Fun

I’m inside! Don’t I’m inside! Don’t come in!come in!

Chicken wing’s Chicken wing’s heart attack!heart attack!