Grade 4 · Science · Challenge
Free Human Body & Health worksheet - version 5
Grade 4 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 4 · Stretch challenge · 8 questions · Version PG-1JY6BFJ-1Y3U
1.How do lungs and circulation interact?
2.How do vaccines help?
3.Which system sends messages through nerves?
4.What is the immune system's job?
5.What do kidneys remove from blood?
6.What maintains stable internal conditions?
7.Why is a balanced diet useful?
8.Why does heart rate rise during exercise?
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 5
- How do lungs and circulation interact?Lungs add oxygen to blood, which carries it to cells
- How do vaccines help?They prepare immunity to recognize a pathogen
- Which system sends messages through nerves?The nervous system
- What is the immune system's job?Defend against harmful pathogens
- What do kidneys remove from blood?Wastes and extra water
- What maintains stable internal conditions?Homeostasis
- Why is a balanced diet useful?It supplies varied nutrients
- Why does heart rate rise during exercise?Muscles need oxygen and nutrients faster
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.