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Year 9 - Science

Smoking

Disease and drugs

Unit Summary

This unit explores the human gas exchange system, focusing on the impact of exercise, asthma, smoking, recreational drugs, and the differences between infectious and non-infectious diseases. It emphasises understanding scientific methods, evidence, risk evaluation, and peer review importance.

Lesson Summary

You will learn to describe the effects of smoking on the human body.

Key Notes

  • Smoking involves inhaling smoke from burning tobacco leaves.
  • Tobacco leaves contain nicotine which is a very addictive substance and it affects the body.
  • Smoking affects the gas exchange system.
  • Smoking increases the risk of diseases such as asthma, COPD, lung cancer and heart disease.

Vocabulary To Learn

  • smoking: The action of inhaling and exhaling smoke from burning tobacco.
  • nicotine: Highly addictive drug found in tobacco leaves.
  • tobacco: Dried leaves of the tobacco plant.
  • gas exchange: The process of oxygen diffusing from the lungs into the blood, and carbon dioxide diffusing from the blood to the lungs.

Common Mistakes To Avoid

  • The heart is heart shaped. The heart gets oxygen and glucose from the blood being pumped out.

3 Quick Questions (With Answers)

1. Explain the scientific idea in this lesson using two key points.

Smoking involves inhaling smoke from burning tobacco leaves. Tobacco leaves contain nicotine which is a very addictive substance and it affects the body.

2. Define this scientific word and use it in context. 'smoking'

The action of inhaling and exhaling smoke from burning tobacco. Include the word in a full scientific explanation, not as a single label.

3. Correct this common scientific misunderstanding.

Mistake: The heart is heart shaped. The heart gets oxygen and glucose from the blood being pumped out. Correction: Point out the shape of the heart and then reinforce with task B.

More Lessons In This Unit

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