Grade 6 Science & Technology · Strand 1: Living things and the Environment · Human Circulatory System
Modelling the 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. In the squeeze-bottle model of the circulatory system, what does the plastic squeeze bottle represent?
- A. A muscular heart chamber (ventricle)
- B. A capillary
- C. A red blood cell
- D. A lung
2. What is the main job of the balloon flap fitted inside the bottle cap in the model?
- A. To warm the liquid so it flows faster
- B. To add oxygen to the coloured water
- C. To prevent backflow so the liquid moves one way only
- D. To store extra liquid when the bottle is full
3. Which of these is a limitation of the squeeze-bottle model of the circulatory system?
- A. It shows that squeezing creates pressure
- B. It shows that valves stop backflow
- C. It has no capillaries and no gas exchange of oxygen and carbon dioxide
- D. It uses a liquid that can move through tubes
4. A group builds the model, but the coloured water flows backwards through the tube. What is the most likely cause?
- A. The balloon flap is taped too loosely or is wrinkled
- B. There is too much modelling clay around the holes
- C. The coloured water is too dark
- D. The tubing is transparent
5. What name is given to the squeeze phase of the heartbeat, when the heart chamber contracts and pushes blood out?
Type your answer in the lesson.
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