Year 9 Science · Unit 4 · Lesson 9

Is It Pseudoscientific? Evaluating Claims and Theories

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Learning Goals

Apply the claim-check framework to decide whether a real claim is pseudoscientific.
Tell the difference between a "not yet proven" idea and a pseudoscientific one.
Justify a verdict using specific features such as falsifiability and evidence.

Warm Up

True or False? Fix the false ones

Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.

A claim that could never be proven wrong is not falsifiable.

Correct it:

Using the word "quantum" automatically makes a claim scientific.

Correct it:

A new, unpopular theory that is testable is automatically pseudoscience.

Correct it:

Replication means other independent teams find the same result.

Correct it:

Your Turn

Scenario

A website sells a magnetic bracelet that, it says, "rebalances your body's energy field and cures back pain". The page shows dozens of glowing testimonials, uses the words "quantum" and "natural energy", and features a smiling person in a white coat. There are no published studies.

(a) Apply the falsifiability check and the evidence check to this claim. What does each one tell you?

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(b) The page says the bracelet "rebalances your energy field". Explain why this is a weak mechanism.

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Show What You Know

1. A scientist proposes a brand-new theory that most colleagues currently reject, but it is falsifiable and being tested. Explain why this is NOT pseudoscience, even though it is new and unpopular.

Apply 3 marks

2. Australia's TGA decides a product cannot claim to "boost immunity". Explain how the TGA would use evidence to reach this decision, and why that is the framework in action.

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Wrap Up

In one sentence, what was the main idea of this lesson?