This Grade 4 Science worksheet explores how the circulatory system moves blood, oxygen, and nutrients through the body. Students examine the heart's role as a pump, how arteries carry oxygen-rich blood out, how veins return blood, and how the lungs add oxygen during breathing. Fill-in-the-blank and matching tasks help Grade 4 learners connect heart rate, blood vessels, and gas exchange into one clear, living circulation map.
Style:
Body Systems and Senses
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The heart is a strong muscle that pumps blood through the whole body.
2. Blood vessels called arteries carry oxygen-rich blood away from the heart.
3. Blood vessels called veins return blood to the heart from the body.
4. The lungs add oxygen to the blood and remove carbon dioxide as we breathe.
5. When you exercise, your heart rate speeds up to deliver more oxygen.
6. Tiny blood vessels called capillaries connect arteries to veins inside body tissues.
7. Blood carries oxygen from the lungs to every cell in the body.
8. Blood returning to the heart from the body is low in oxygen and high in carbon dioxide.
9. The circulatory system works closely with the respiratory system to exchange gases.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Heart
→ Pumps blood through the body
Carries blood back to the heart
Artery
→ Carries oxygen-rich blood away from the heart
Pumps blood through the body
Vein
→ Carries blood back to the heart
Add oxygen to the blood
Lungs
→ Add oxygen to the blood
Carries oxygen-rich blood away from the heart
Body Systems and Senses
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) The heart is a strong muscle that pumps blood through the whole body.
2) Blood vessels called arteries carry oxygen-rich blood away from the heart.
3) Blood vessels called veins return blood to the heart from the body.
4) The lungs add oxygen to the blood and remove carbon dioxide as we breathe.
5) When you exercise, your heart rate speeds up to deliver more oxygen.
6) Tiny blood vessels called capillaries connect arteries to veins inside body tissues.
7) Blood carries oxygen from the lungs to every cell in the body.
8) Blood returning to the heart from the body is low in oxygen and high in carbon dioxide.
9) The circulatory system works closely with the respiratory system to exchange gases.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Heart
→ Pumps blood through the body
Carries blood back to the heart
Artery
→ Carries oxygen-rich blood away from the heart
Pumps blood through the body
Vein
→ Carries blood back to the heart
Add oxygen to the blood
Lungs
→ Add oxygen to the blood
Carries oxygen-rich blood away from the heart
Ready to Practice?
Complete each section carefully.
10 Questions
10-15 minutes
Auto-graded
Retry anytime
🏆
Questions Correct
0
Correct
0
Incorrect
0
Skipped
0:00
Time
0%
Score
Review Your Answers
See what you got right, missed, or skipped.