❤️ Part 1: Heart Diagram Labelling

1. Label the parts of the heart using the words from the word bank below:

Word Bank: Left Atrium, Right Atrium, Left Ventricle, Right Ventricle, Aorta, Pulmonary Artery

2. Draw arrows on the diagram above to show the direction of blood flow through the heart.

🩸 Part 2: Blood Vessels

3. Match each blood vessel type with its correct description:

1. Arteries

2. Veins

3. Capillaries

A. Tiny blood vessels where gas exchange occurs

B. Carry blood away from the heart

C. Carry blood back to the heart

4. Which blood vessels have the thickest walls and why?

🔄 Part 3: Blood Flow Experiment Observations

5. Based on your blood flow model experiment, fill in the blanks:

When the "heart" pumped faster, the blood flow _____________ through the vessels. When the pumping was slower, the blood flow _____________. This shows that the heart rate affects how quickly _____________ moves around the body.

6. What happened to the flow rate when you changed the pumping speed? Record your observations:

7. Why does the heart need to pump blood continuously?

To keep the blood warm

To deliver oxygen and nutrients to all body cells

To make noise in the chest

To exercise the heart muscle

💪 Part 4: Heart Health

8. Check all the activities that promote good heart health:

Regular exercise

Eating lots of fatty foods

Eating fruits and vegetables

Smoking cigarettes

Getting enough sleep

Drinking plenty of water

9. Explain what might happen if blood flow to part of the body is reduced or blocked:

10. How does exercise affect your heart rate and blood flow? Explain using what you learned from the experiment:

🧠 Part 5: Critical Thinking

11. The circulatory system works together with other body systems. Name two other body systems that work closely with the circulatory system and explain how:

12. Design a simple experiment to measure how exercise affects heart rate. Describe your method: