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🔬 Science, Years 7 and 8

Years 7 to 8 · Read up first

10 questions. Get 8 right to earn 10 minutes. All 10 right = +5 bonus. They start easy and get harder as you go, so treat the first few as a warm-up. Every one you miss comes back with the answer and why.

1. Which organ pumps blood around the body?

The heartThe lungsThe liverThe stomach

2. On the pH scale, what does a pH below 7 mean?

The substance is pure waterThe substance is neutralThe substance is a baseThe substance is acidic

3. Melting an ice cube into water is what kind of change?

A chemical changeA physical changeNeither, nothing has changedA nuclear change

4. What does the periodic table organise?

CellsPlanetsCompoundsElements

5. Which group includes only animals that produce milk for their young?

MammalsReptilesFishAmphibians

6. Which of these is a sign that a chemical change has probably happened?

The substance gets colder without anything being addedThe substance changes shapeThe substance is cut into smaller piecesBubbling or fizzing as a new gas is given off

7. Which type of rock forms when magma or lava cools and hardens?

Metamorphic rockSedimentary rockFossil rockIgneous rock

8. Why can gases be squeezed into a smaller space much more easily than liquids or solids?

Gas particles are far apart with lots of empty space between themGas particles are stuck together tightlyGas particles are heavier than liquid particlesGas has no particles at all

9. In a food chain, what do we call an organism that makes its own food using sunlight?

A decomposerA producerA predatorA consumer

10. Two forces act on a stationary box: gravity pulling it down and the floor pushing it up. Why does the box not move?

Friction removes both forcesThe box has no massThere are no forces acting on the boxThe two forces are balanced, so they cancel out

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