Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 2 · 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 a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
3. 3.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
4. 4.True or false: vinegar is an acid. (a) True (b) False
5. 5.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
6. 6.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “distance from the pencil”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is heavy (c) hot water can scald (d) hot water is magnetic
8. 8.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) they turn to ice (c) faster (d) slower
9. 9.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.🛟 How should the plastic bag be tied around the branch? (a) gently, not too tight (b) with sharp wire (c) with a hot glue gun (d) as tight as possible
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) turmeric powder
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🫧 Which of these is neutral? (a) orange juice (b) vinegar (c) plain water (d) soap solution
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) turmeric powder (d) a small paper cup
15. 15.🥄 Which of these dissolves slower? (a) powdered sugar (b) a big sugar cube (c) sugar in warm water (d) sugar stirred well
16. 16.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it is too big (c) it can block breathing (d) it gets wet
17. 17.💧 Which change is this: a misty bathroom mirror? (a) freezing (b) evaporation (c) melting (d) condensation
18. 18.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the order of the layers (c) the same glass
19. 19.🔦 Which of these is opaque? (a) butter paper (b) a book (c) frosted glass (d) clear plastic film
20. 20.🧺 Which of these is needed for the magnet test? (a) turmeric powder (b) a mirror (c) vinegar (d) test objects
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
22. 22.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
23. 23.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) salt crystals (c) tiny water drops (d) nothing at all
24. 24.🌱 Why do the seeds on dry cotton not sprout? (a) they have no salt (b) they have no soil (c) they have no water (d) they are too wet
25. 25.True or false: a crumpled paper ball falls slowly through the air. (a) False (b) True
26. 26.🧺 Do we need a balloon for sprouting seeds? (a) not needed (b) needed
27. 27.True or false: a mirror is not needed for the leafy bag test. (a) False (b) True
28. 28.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
29. 29.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
30. 30.🏗️ Which of these gets its strength from a tube shape? (a) a roof frame (b) a temple dome (c) a bridge truss (d) a bamboo pole
31. 31.🧺 Do we need a results chart for the magnet test? (a) not needed (b) needed
32. 32.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
33. 33.True or false: a mirror is not needed for the paper helicopter. (a) True (b) False
34. 34.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it is magnetic (d) it might sing
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🌉 Which of these makes a weak bridge? (a) a U-shaped channel (b) a wet flat sheet (c) a zigzag-folded sheet (d) paper with folded edges
37. 37.🔍 Which is the odd one out? (a) tiny paper bits (b) a brick (c) a pebble (d) a heavy book
38. 38.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a magnet (d) a small rainbow
39. 39.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the same ruler is what we measure. (a) True (b) False
40. 40.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve

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