Iowa / ITBS Science — Grade 6

📋 Test Overview

Test

Iowa / ITBS-style Science practice

Grade level

Grade 6

Length

practice + challenge + 4 explain prompts — more practice than Testing Mom's Grade 6 science set

Skills

Cells & body systems · classification & traits · ecosystems & energy flow · matter & changes · energy & forces · weather & climate · Earth & space

How it's upgraded

Each topic is taught first; every answer gets reasoning; a challenge round connects ideas

Standards

MS-LS1–4 · MS-PS1–3 · MS-ESS1–2

Before you start: Grade 6 science explores cells and the body, ecosystems and energy, matter and forces, weather, and Earth in space.

📌 FlyingMinds rule: Use evidence to explain WHY, and test ideas with a fair experiment.

🔮 WARM-UP · NOT SCORED

🦉 Fred asks: How does energy get from the Sun to a fox in a food chain?

Starter: Energy goes from the Sun to __________ to __________ because __________ .

🎯 Practice score: 0 / 58

🟢 Part A — Cells & living things

All living things are made of cells, the basic unit of life. Cells form tissues, tissues form organs, and organs form systems.

MS-LS1 · CellsCELLS

1. The basic building block of all living things is the —

atom organ cell molecule

MS-LS1 · CellsCELLS

2. The part of a cell that controls its activities is the —

nucleus cell wall vacuole membrane

MS-LS1 · CellsCELLS

3. Which structure is found in PLANT cells but NOT animal cells?

nucleus cell wall cell membrane cytoplasm

MS-LS1 · CellsCELLS

4. Chloroplasts let plant cells —

store waste move quickly fight germs make food using sunlight

MS-LS1 · CellsCELLS

5. From smallest to largest, the correct order is —

cell → tissue → organ → system organ → cell → tissue → system system → organ → cell → tissue tissue → cell → organ → system

MS-LS1 · CellsCELLS

6. A tool used to see cells too small for the eye is a —

telescope thermometer microscope barometer

MS-LS1 · CellsCELLS

7. An organism made of only ONE cell is —

multicellular nonliving an organ unicellular

MS-LS1 · CellsCELLS

8. The cell membrane mainly —

makes the cell green controls what enters and leaves the cell stores the DNA only gives plants their smell

🔵 Part B — Human body systems

Body systems work together. The circulatory system moves blood; the respiratory system handles air; the digestive system breaks down food.

MS-LS1 · Body systemsBODY

9. The organ that pumps blood through the body is the —

heart lung stomach brain

MS-LS1 · Body systemsBODY

10. The main job of the LUNGS is to —

pump blood digest food exchange oxygen and carbon dioxide store memories

MS-LS1 · Body systemsBODY

11. Food is broken down for the body in the —

nervous system skeletal system respiratory system digestive system

MS-LS1 · Body systemsBODY

12. The system of bones that supports the body is the —

muscular system skeletal system circulatory system digestive system

MS-LS1 · Body systemsBODY

13. Muscles help the body by —

producing movement carrying oxygen filtering blood storing fat only

MS-LS1 · Body systemsBODY

14. The brain and nerves make up the —

respiratory system nervous system skeletal system digestive system

MS-LS1 · Body systemsBODY

15. Blood carries oxygen because of red cells that contain —

chlorophyll minerals only hemoglobin water only

MS-LS1 · Body systemsBODY

16. Which two systems work together when you exercise and breathe harder?

skeletal and digestive nervous and skeletal only digestive and respiratory respiratory and circulatory

🟡 Part C — Classification & traits

Scientists group living things by shared features. Traits can be inherited (from parents) or learned (from experience).

MS-LS4 · ClassificationLIFE

17. An animal WITH a backbone is a —

invertebrate vertebrate producer decomposer

MS-LS4 · ClassificationLIFE

18. An insect, which has no backbone, is an —

invertebrate vertebrate mammal amphibian

MS-LS4 · ClassificationLIFE

19. Eye color passed from parent to child is an —

learned trait habit choice inherited trait

MS-LS4 · ClassificationLIFE

20. Riding a bicycle is an example of a —

inherited trait instinct only learned behavior reflex

MS-LS4 · ClassificationLIFE

21. A polar bear's thick fur is an —

adaptation for surviving the cold learned hobby weakness random accident

MS-LS4 · ClassificationLIFE

22. Scientists classify living things mainly by their —

favorite foods color only names only shared characteristics

🟣 Part D — Ecosystems & energy flow

Producers make food; consumers eat; decomposers break down dead matter. Energy flows from the Sun through food chains.

MS-LS2 · EcosystemsECOLOGY

23. In a food chain, a plant that makes its own food is a —

consumer decomposer producer predator

MS-LS2 · EcosystemsECOLOGY

24. An animal that eats other living things is a —

producer consumer decomposer mineral

MS-LS2 · EcosystemsECOLOGY

25. Fungi and bacteria that break down dead matter are —

decomposers producers predators herbivores

MS-LS2 · EcosystemsECOLOGY

26. The original source of energy for almost all ecosystems is the —

soil Moon wind Sun

MS-LS2 · EcosystemsECOLOGY

27. In photosynthesis, plants use sunlight, water, and carbon dioxide to make —

soil and rock plastic sugar (food) and oxygen salt

MS-LS2 · EcosystemsECOLOGY

28. An animal that hunts another animal is the —

prey predator producer decomposer

MS-LS2 · EcosystemsECOLOGY

29. A food WEB is different from a food chain because it shows —

only one animal only plants many connected feeding relationships the weather

MS-LS2 · EcosystemsECOLOGY

30. If all the producers in an ecosystem died, the consumers would most likely —

grow faster run out of food and decline turn into producers be unaffected

⚪ Part E — Matter

Matter is anything with mass and volume. It is made of atoms and exists as solid, liquid, or gas. Changes can be physical or chemical.

MS-PS1 · MatterMATTER

31. The tiny particles that make up all matter are —

atoms cells organs fossils

MS-PS1 · MatterMATTER

32. Which is a CHEMICAL change?

ice melting into water cutting paper crushing a can wood burning into ash and smoke

MS-PS1 · MatterMATTER

33. Which is a PHYSICAL change?

iron rusting a cake baking water freezing into ice milk turning sour

MS-PS1 · MatterMATTER

34. In which state do particles move fastest and spread out the most?

solid liquid frozen gas

MS-PS1 · MatterMATTER

35. Salt dissolved in water forms a —

solution (a mixture) new element chemical change gas

MS-PS1 · MatterMATTER

36. When you mix sand and water, you can separate them again, so it is a —

compound mixture chemical change new element

🟢 Part F — Energy & forces

Energy comes in forms (heat, light, motion, electrical) and can change form. Forces are pushes and pulls that change motion.