Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 95 · 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.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) very salty (d) warm, not hot
2. 2.True or false: a rubber band is not needed for the leafy bag test. (a) True (b) False
3. 3.True or false: a sugar cube lets water climb up it. (a) False (b) True
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) plain water (b) curd (c) lemon juice (d) vinegar
6. 6.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “where the pencil is”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.True or false: a magnetic chess set works by air pressure. (a) True (b) False
8. 8.⚖️ Fair test — which kind of ball bounces highest? True or false: the drop height is kept the same. (a) True (b) False
9. 9.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) size of the balloon (c) the amount of vinegar
11. 11.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a round pencil (b) coins of one kind (c) a flat table (d) a mirror
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a towel (d) a mirror
13. 13.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a bowl (c) yeast (d) a timer
14. 14.🛟 Which of these is an unsafe habit? (a) washing hands afterwards (b) tying back long hair (c) wiping up spills at once (d) running with glassware
15. 15.📘 Rubbing moves tiny charges. What do we call the charge that builds up? (a) magnetism (b) gravity (c) static electricity (d) sunlight
16. 16.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
17. 17.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
18. 18.🛟 What should you do with leftover materials at the end? (a) leave them out (b) clean up safely (c) hide them (d) taste them
19. 19.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors
20. 20.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
21. 21.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) more (b) the same number of (c) zero (d) fewer
22. 22.🧲 Which of these pull together? (a) south near north (b) south near south (c) north near north
23. 23.True or false: a steel paper clip is pulled by a magnet. (a) False (b) True
24. 24.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
25. 25.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) True (b) False
27. 27.🧂 Which of these does not dissolve in water? (a) glucose powder (b) small pebbles (c) baking soda (d) table salt
28. 28.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water can scald (c) it changes colour (d) hot water is magnetic
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is the one thing we change. (a) True (b) False
30. 30.🧺 Do we need turmeric powder for the magnet test? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) freezing water (b) browning lemon ink (c) dissolving salt (d) melting ice
32. 32.🔍 Which is the odd one out? (a) milk turning to curd (b) melting butter (c) browning lemon ink (d) cooking an egg
33. 33.⚡ Which big natural spark is caused by static electricity? (a) lightning (b) dew (c) the wind (d) a rainbow
34. 34.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.True or false: an iron nail sinks in water. (a) True (b) False
36. 36.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) the gas froze (c) the bottle got tired (d) an ingredient ran out
37. 37.🧺 Do we need turmeric powder for the water cycle bowl? (a) not needed (b) needed
38. 38.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
39. 39.🥄 Which of these does not dissolve in water? (a) sawdust (b) food colour (c) sugar (d) baking soda
40. 40.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved

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