Grade 6 Science & Technology · Strand 1: Living things and the Environment · Human Circulatory System
Promoting a Healthy Circulatory System
A short Grade 6 Science & Technology lesson for the CBE curriculum, part of Living things and the Environment: Human Circulatory System. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.
1. Why does dehydration make the heart work harder?
- A. Blood plasma volume drops and the blood becomes thicker
- B. Blood vessels become much wider
- C. The blood turns into water
- D. The heart muscle stops needing oxygen
2. Which of these is the best heart-friendly meal choice for a Grade 6 learner in Kenya?
- A. Deep-fried chips with extra salt
- B. Ugali with sukuma wiki and beans
- C. Fatty fried meat with salty crisps
- D. Sugary soda with fried mandazi
3. Why is eating too much table salt harmful to the circulatory system?
- A. It makes the body lose water from the blood
- B. It makes the arteries wider and lowers blood pressure
- C. It makes the body retain water, which increases blood volume and raises blood pressure
- D. It turns red blood cells into white blood cells
4. Which of these is a benefit of regular aerobic exercise such as jogging or skipping?
- A. The resting pulse rate becomes higher
- B. The artery walls become stiff and hard
- C. The heart muscle becomes weaker
- D. The heart becomes stronger and the resting pulse rate becomes lower
5. What word describes sustained exercise, such as jogging, that uses oxygen to fuel the muscles?
Type your answer in the lesson.
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