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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 stomachThe heartThe lungsThe liver

2. In a solid, how are the particles arranged?

Tightly packed and vibrating in placeSpread far apart and moving fastLoosely packed and sliding past each otherNot moving at all

3. Which system in the body is mainly responsible for breaking down food so it can be absorbed?

The circulatory systemThe respiratory systemThe digestive systemThe nervous system

4. What colour does universal indicator paper typically turn in a strong acid?

RedGreenBluePurple

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

Fossil rockIgneous rockMetamorphic rockSedimentary rock

6. A ball held up high has stored energy due to its position. What is this energy called?

Electrical energySound energyKinetic energyGravitational potential energy

7. What is the main job of the respiratory system?

Breaking down foodPumping blood around the bodySending electrical signals around the bodyTaking in oxygen and removing carbon dioxide

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

The two forces are balanced, so they cancel outThe box has no massThere are no forces acting on the boxFriction removes both forces

9. Which group of the periodic table contains elements that barely react with anything else?

The noble gasesThe transition metalsThe halogensGroup 1, the alkali metals

10. Earthquakes are common along the edges of tectonic plates. Why?

Volcanoes cause every earthquake directlyPlate edges are always perfectly still, so earthquakes come from elsewhereEarthquakes are caused by the Moon's gravity aloneStress builds up as plates grind, collide or pull apart, and is suddenly released

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