Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 53 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s science idea. 3. For a fair test: one thing changed, the rest kept the same, one thing measured. 4. For safety: an adult helps, nothing goes in the mouth, no heat, sharp tools or plug points for children.

1. 1.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
2. 2.True or false: honey is not needed for the dissolving test. (a) False (b) True
3. 3.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
4. 4.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is magnetic (d) it is wet
7. 7.🪴 Which of these is a job of the stem? (a) hold up the leaves (b) make seeds (c) give out water vapour (d) make food in sunlight
8. 8.🍞 Why does yeast work slowly in cold water? (a) cold makes it pink (b) cold water is heavy (c) cold kills sugar (d) cold slows yeast down
9. 9.🍯 Which of these is denser than water? (a) a ping-pong ball (b) an ice cube (c) honey (d) a cork
10. 10.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the water turns solid (c) the sugar turns to salt (d) all of it dissolves
11. 11.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
12. 12.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
13. 13.True or false: salt is needed for growing salt crystals. (a) True (b) False
14. 14.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) in a circle (d) down
15. 15.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the amount of water (b) the same window (c) brightness of rainbow (d) the time of day
17. 17.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
18. 18.🚀 Which of these goes forward? (a) the balloon (b) air from the balloon (c) water from the oars (d) gas from the rocket
19. 19.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cotton wool (c) warm water (d) two clear glasses
20. 20.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a magnet (d) a solution
21. 21.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
22. 22.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) sun or shade (c) the size of the bowl
23. 23.⚖️ What is the turning point of a lever called? (a) the effort (b) the axle (c) the load (d) the fulcrum
24. 24.🚁 Dropped from a raised hand, does a fluff of cotton fall slowly or fast? (a) falls fast (b) falls slowly
25. 25.True or false: a battery cell is not needed for making butter. (a) True (b) False
26. 26.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) air pushes it up (d) juice likes plastic
27. 27.🔍 Which is the odd one out? (a) washing hands afterwards (b) touching a hot iron (c) wiping up spills at once (d) reading the steps first
28. 28.🏗️ Where does a roof frame get its strength from? (a) arches and domes (b) triangles (c) tubes
29. 29.🪴 Which of these is a job of the leaves? (a) carry water upward (b) give out water vapour (c) take in water from soil (d) make seeds
30. 30.True or false: south near north push apart. (a) False (b) True
31. 31.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny water drops (b) nothing at all (c) tiny insects (d) salt crystals
32. 32.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) a pencil (c) a strip of paper (d) a ruler
33. 33.True or false: an ice cube is denser than water. (a) True (b) False
34. 34.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
35. 35.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
36. 36.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
40. 40.True or false: a heavy book jumps to a charged comb. (a) False (b) True

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