Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 97 · 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.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) it stops in the air (c) slower (d) it floats up
2. 2.True or false: an electric tower gets its strength from arches or domes. (a) False (b) True
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a magnet (c) a small paper cup (d) coins as the load
4. 4.🛟 Why should coins be kept away from very small children? (a) they are magnetic (b) they may swallow them (c) they are too shiny (d) they are too cold
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
6. 6.True or false: a balloon is needed for the periscope. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) clear glass (b) air (c) clean water (d) frosted glass
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the angle of the mirrors (c) the same mirrors (d) the same light
9. 9.🔮 Predict: you wet the comb before trying again. What happens? (a) it hardly works (b) it lights up (c) it becomes a magnet (d) it works better
10. 10.🔍 Which is the odd one out? (a) wiping up spills at once (b) reading the steps first (c) tying back long hair (d) working with no adult
11. 11.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a stopwatch (d) a ruler
12. 12.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) sunshine (c) rain (d) lightning
13. 13.🔮 Predict: 2 coins sit 5 cm left of the pencil and 2 coins sit 10 cm right of it. Which side goes down? (a) the left side (b) neither, it balances (c) both go up (d) the right side
14. 14.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? What do we do with “the magnet used”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🚁 Why does the paper helicopter fall slowly? (a) the floor pushes it (b) air pushes on its blades (c) a magnet holds it (d) it has no weight
16. 16.🧲 Which metal do magnets pull most strongly? (a) gold (b) aluminium (c) iron (d) copper
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a magnet (c) a sunny open place (d) chalk to mark shadows
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.True or false: plugging in the iron is a job a child can do. (a) False (b) True
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) turmeric powder
22. 22.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
23. 23.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the paper helicopter? (a) safety scissors (b) yeast (c) turmeric powder (d) a magnet
25. 25.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) food colour (d) sawdust
26. 26.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) pale yellow (b) bright red (c) blue (d) dark green
27. 27.⚖️ Coins on the two sides balance when coins × distance is ___. (a) bigger on the left (b) zero (c) equal on both sides (d) always 10
28. 28.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it flowers more (c) it wilts and droops (d) it turns blue
29. 29.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a plastic ruler (d) a steel spoon
30. 30.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) smell it closely (d) taste it
31. 31.True or false: a magnet is not needed for the water cycle bowl. (a) True (b) False
32. 32.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) husk from rice grain (c) gravel from fine sand (d) mud from water
33. 33.True or false: a magnet is something yeast needs. (a) True (b) False
34. 34.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) sugar from sugar water (c) gravel from fine sand (d) tea leaves from tea
35. 35.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
36. 36.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) keep it away from eyes (d) shake it near your face
37. 37.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is the one thing we change. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a thin water stream (b) puffed rice (c) thermocol bits (d) a steel spoon
39. 39.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🛟 There is lightning outside. Where is it safest to be? (a) indoors (b) in an open field (c) under a tall tree (d) on a rooftop

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