physics

One-Tonne Challenge

One-Tonne Challenge is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand One-Tonne Challenge rather than just read about it. In short: The One-Tonne Challenge was a challenge presented by the Government of Canada in March 2004 for Canadians to reduce their greenhouse gas emissions by one tonne each year. The figure represented 20% of total greenhouse gas output by Canadians at the time and aimed to help the country reach its Kyoto Protocol emission reduction targets.

Key takeaways

One-Tonne Challenge belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect One-Tonne Challenge to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of One-Tonne Challenge from memory before moving on to harder problems.

Reference excerpt

The One-Tonne Challenge was a challenge presented by the Government of Canada in March 2004 for Canadians to reduce their greenhouse gas emissions by one tonne each year. The figure represented 20% of total greenhouse gas output by Canadians at the time and aimed to help the country reach its Kyoto Protocol emission reduction targets. The Liberal Government under Jean Chrétien and Paul Martin approved over $45 million to fund the program from 2003 to 2006. To promote this program, the government placed television and print ads featuring comedian Rick Mercer. In one commercial, he described Canadians as wanting to take the challenge. "C’mon... we’re Canadian... we’re up for a challenge!"

The government urged Canadians to do such things as:

take public transit more often idle vehicles less use programmable thermostats seal windows with caulking and weather-stripping compost organic kitchen waste support green energy water and energy conservation purchase electronics that are labelled with the Energy Star logo recycling The program received an indifferent reception from the public, and has been criticized as ineffective and wasteful. This program was started by the Liberal Party of Canada. However, with the election of Stephen Harper's Conservative Government in 2006, the One Tonne Challenge was scrapped.

Illustrations

One Tonne Challenge Logo

Worked examples

Example 1 — a first encounter with One-Tonne Challenge

Start with the simplest possible case. Write down what One-Tonne Challenge claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to One-Tonne Challenge before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about One-Tonne Challenge ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of One-Tonne Challenge

In research: One-Tonne Challenge appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses One-Tonne Challenge in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: One-Tonne Challenge is common in secondary-school and first-year university syllabi. It links to neighbouring topics Emissions reduction, Energy conservation in Canada, Environment of Canada, so understanding it makes those chapters shorter.
In everyday life: Look for One-Tonne Challenge outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study One-Tonne Challenge in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what One-Tonne Challenge means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain One-Tonne Challenge out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is One-Tonne Challenge in simple terms?

Why does One-Tonne Challenge matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study One-Tonne Challenge?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on One-Tonne Challenge.