Year 8 - Science
The effects of exercise on the human body
Diet and exercise
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit covers the components of a healthy diet, energy requirements, and the effects of imbalances, exercise, asthma, and smoking on the body. It also focuses on planning scientific enquiries, applying mathematical concepts, performing calculations, and basic data analysis techniques.
Lesson Summary
You will learn to describe the effects of exercise on breathing rate and heart rate, and the wider health benefits of regular exercise.
Key Notes
- Exercise is activity requiring physical effort.
- Regular exercise is beneficial for good physical and mental health.
- Exercising causes increases in breathing rate and heart rate as cells need more oxygen for cellular respiration.
Vocabulary To Learn
- exercise: Exercise is activity requiring physical effort.
- breathing rate: The number of breaths per minute.
- heart rate: The number of heart beats per minute.
- gas exchange: The process of oxygen diffusing from the lungs into the blood, and carbon dioxide diffusing from the blood into the lungs.
- cellular respiration: A chemical process in cells, which uses sugar as a fuel to provide energy for life processes.
Common Mistakes To Avoid
- Health is only made up of physical health.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Exercise is activity requiring physical effort. Regular exercise is beneficial for good physical and mental health.
2. Define this scientific word and use it in context. 'exercise'
Exercise is activity requiring physical effort. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Health is only made up of physical health. Correction: Remind students that health is a range from good to ill. Physical and mental health both contribute to a person's overall health.
More Lessons In This Unit
- Balanced diet Study Guide
- Energy provided by food: practical Study Guide
- Food is a source of building materials and energy Study Guide
- Good and ill health Study Guide
- Imbalanced diet: obesity Study Guide
- Imbalanced diet: starvation and deficiency diseases Study Guide
- Recovery time after exercise Study Guide
- The effects of exercise on breathing and heart rate Study Guide
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