Year 8 - Science
Imbalanced diet: starvation and deficiency diseases
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 explain the effects on the human body of not consuming enough nutrients.
Key Notes
- Not consuming a balanced diet can lead to ill health.
- Body mass index (BMI) is calculated from a person's height and body mass.
- Not consuming enough food can cause BMI to become too low, and eventually lead to starvation.
- Deficiency diseases are the result of not consuming enough of a particular nutrient.
Vocabulary To Learn
- BMI: Body mass index (BMI) is a measure that compares your weight and height to assess whether they are in a healthy proportion.
- starvation: When a person does not receive enough calories for their normal bodily function.
- deficiency disease: A disease that occurs due to a lack of essential nutrients in the diet.
Common Mistakes To Avoid
- Malnutrition is all about being too thin.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Not consuming a balanced diet can lead to ill health. Body mass index (BMI) is calculated from a person's height and body mass.
2. Define this scientific word and use it in context. 'BMI'
Body mass index (BMI) is a measure that compares your weight and height to assess whether they are in a healthy proportion. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Malnutrition is all about being too thin. Correction: Clear statement included to dispel this myth.
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
- Recovery time after exercise Study Guide
- The effects of exercise on breathing and heart rate Study Guide
- The effects of exercise on the human body Study Guide
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