Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 62 · 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.🧲 Which of these is pulled by a magnet? (a) a cotton cloth (b) a rubber eraser (c) an iron nail (d) a paper sheet
2. 2.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
4. 4.🍋 Why can’t you see the lemon writing once it dries? (a) it turned into air (b) dry juice is see-through (c) the paper ate it (d) the ink is magnetic
5. 5.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
6. 6.🧺 Do we need a balloon for the ruler lever? (a) not needed (b) needed
7. 7.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) soap solution (d) baking soda water
8. 8.🔍 Which is the odd one out? (a) sugar (b) table salt (c) food colour (d) cooking oil
9. 9.💧 Which of these does not let water climb? (a) a piece of chalk (b) a plastic ruler (c) a cotton thread (d) a flower stem
10. 10.⚖️ Fair test — which kind of ball bounces highest? What do we do with “the kind of ball”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🔮 Predict: you stop shaking after only one minute. What do you have? (a) still runny cream (b) cheese (c) ghee (d) butter lumps
12. 12.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) white paper strips (d) yeast
13. 13.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a ruler (c) a mirror (d) a battery cell
14. 14.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) the order of pouring (c) the order of the layers (d) the same glass
15. 15.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
16. 16.🏗️ Where does an eggshell get its strength from? (a) triangles (b) arches and domes (c) tubes
17. 17.🛟 How should you store bar magnets? (a) loose in a toy box (b) dropped on the floor (c) in pairs, opposite ends (d) in a hot oven
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) a pencil (d) two small mirrors
19. 19.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it turns blue (d) so it gets hot
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a mirror (d) a towel
21. 21.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it gets hot (d) it could fall on you
22. 22.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) cooking oil (d) food colour
23. 23.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) one mixed colour (c) three separate layers (d) the glass gets hot
24. 24.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
25. 25.True or false: sugar stirred well dissolves slower. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) browning lemon ink (b) cooking an egg (c) milk turning to curd (d) folding paper
27. 27.🧺 Do we need vinegar for the leafy bag test? (a) not needed (b) needed
28. 28.🧲 Which of these is pulled by a magnet? (a) a paper sheet (b) an iron screw (c) a wooden pencil (d) an aluminium can
29. 29.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: distance from the pencil is kept the same. (a) True (b) False
30. 30.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) how big we blow it (c) the slope of the string (d) distance it travels
33. 33.True or false: salt is needed for growing salt crystals. (a) False (b) True
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) skip washing
37. 37.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) taller walls (d) the ground
38. 38.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “distance to the paper”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a balloon (c) a comb (d) sugar
40. 40.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) moong seeds (c) water (d) a magnet

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