Grade 3 · Science · On Level
Free Human Body & Health worksheet - version 8
Grade 3 human body & health practice with original questions, explanations, and difficulty-matched printable versions. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Human Body & Health
Grade 3 · On-level practice · 8 questions · Version PG-18W2LC5-N3A3
1.What do kidneys remove from blood?
2.What is the immune system's job?
3.Why is a balanced diet useful?
4.Which system sends messages through nerves?
5.Why do people need sleep?
6.Where does digestion begin?
7.Which cells carry oxygen?
8.What do muscles do?
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 8
- What do kidneys remove from blood?Wastes and extra water
- What is the immune system's job?Defend against harmful pathogens
- Why is a balanced diet useful?It supplies varied nutrients
- Which system sends messages through nerves?The nervous system
- Why do people need sleep?To help the body and brain recover
- Where does digestion begin?In the mouth
- Which cells carry oxygen?Red blood cells
- What do muscles do?They contract to move body parts
Worked example
Connect a structure to its function and explain how body systems work together.
Common mistake
Naming an organ without explaining its system role.
Helpful hint
Trace what enters, changes, and leaves the system.