Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 14 · 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 longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.📘 What is water vapour? (a) salty water (b) a kind of smoke (c) water as a gas (d) tiny ice cubes
3. 3.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
4. 4.🧺 Which of these is not needed for the periscope? (a) a magnet (b) two small mirrors (c) sticky tape (d) a pencil
5. 5.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) vinegar (c) a funnel or spoon (d) sugar
6. 6.True or false: a timer is needed for making butter. (a) False (b) True
7. 7.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
8. 8.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a rubber eraser (d) a glass marble
9. 9.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is what we measure. (a) False (b) True
10. 10.🛟 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
11. 11.True or false: a cotton bud is needed for the secret lemon message. (a) True (b) False
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) a clean glass (d) yeast
13. 13.🍞 Which of these is something yeast does not need? (a) a magnet (b) sugar (c) time (d) warm water
14. 14.🧺 Three of these are needed for the magnet test. Which one is NOT needed? (a) a bar magnet (b) a tray (c) a results chart (d) a balloon
15. 15.⚙️ Which simple machine is a crowbar? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
16. 16.🧺 Which of these is needed for the leafy bag test? (a) vinegar (b) yeast (c) a battery cell (d) a potted plant
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.True or false: sugar left unstirred dissolves faster. (a) True (b) False
19. 19.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) put it in your mouth (c) shake it near your face (d) seal it in a glass jar
20. 20.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a pencil and tape (c) yeast (d) a mirror
21. 21.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? What do we do with “the same table”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.True or false: small pebbles dissolves in water. (a) False (b) True
23. 23.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) yeast (c) a magnet (d) a clean glass
24. 24.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is kept the same. (a) False (b) True
25. 25.True or false: give out water vapour is a job of the leaves. (a) True (b) False
26. 26.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) False (b) True
28. 28.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is magnetic (d) it is hot
29. 29.True or false: still clear water reflects light poorly. (a) False (b) True
30. 30.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
31. 31.📘 What is the push of air on a falling thing called? (a) magnetism (b) dissolving (c) air resistance (d) floating
32. 32.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) stopped (d) slower
33. 33.True or false: north near north push apart. (a) False (b) True
34. 34.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
35. 35.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
36. 36.True or false: table salt does not dissolve in water. (a) False (b) True
37. 37.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 10 cm (d) 20 cm
38. 38.True or false: a fridge magnet works by air pressure. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
40. 40.🧺 Three of these are needed for the magnet test. Which one is NOT needed? (a) a tray (b) a mirror (c) test objects (d) a bar magnet

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids