Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 102 · 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 not needed for the static comb? (a) a magnet (b) tiny paper bits (c) a plastic comb (d) dry hair
2. 2.True or false: yeast is not needed for the leafy bag test. (a) True (b) False
3. 3.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a balloon (c) cooking oil (d) honey
5. 5.True or false: a magnet is needed for the secret lemon message. (a) False (b) True
6. 6.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) two clear glasses (c) a comb (d) honey
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a magnet (c) an empty juice carton (d) sticky tape
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) False (b) True
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) the slope of the string (c) distance it travels
10. 10.True or false: water with food colour is needed for the density tower. (a) True (b) False
11. 11.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
14. 14.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) long (d) missing
15. 15.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour
16. 16.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) dry hair (b) tiny paper bits (c) a balloon (d) turmeric powder
17. 17.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “the paper bit size”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.⚖️ Fair test — which paper shape holds the most coins? True or false: the shape of the paper is kept the same. (a) True (b) False
19. 19.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) the same (b) harder (c) impossible (d) easier
20. 20.True or false: a safety pin is pulled by a magnet. (a) True (b) False
21. 21.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a fridge magnet (d) a balloon rocket
22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a clock or timer (c) two clear glasses (d) a balloon
23. 23.⚖️ Fair test — which kind of ball bounces highest? True or false: the floor surface is what we measure. (a) True (b) False
24. 24.True or false: soap solution keeps turmeric yellow. (a) False (b) True
25. 25.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
26. 26.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) chew them (d) throw them away safely
27. 27.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a slide (c) a spoon lifting a lid (d) a flagpole
28. 28.💧 Which of these lets water climb up it? (a) a piece of foil (b) a paper towel (c) a plastic ruler (d) a steel spoon
29. 29.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it flowers more (c) it grows faster (d) it turns blue
30. 30.🔍 Which is the odd one out? (a) sweat drying on skin (b) dew on morning grass (c) drops under a pot lid (d) drops on a cold glass
31. 31.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) melting butter (d) browning lemon ink
32. 32.True or false: cooking oil is needed for the density tower. (a) True (b) False
33. 33.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) mud from water (c) bran from wheat flour (d) bad grains from rice
35. 35.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) yeast (c) a strip of paper (d) a paper clip
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is what we measure. (a) True (b) False
37. 37.True or false: tiny paper bits is not needed for the static comb. (a) False (b) True
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) turmeric powder (c) a towel (d) a glass of water
39. 39.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sugar (d) vinegar
40. 40.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) small test objects (d) a mirror

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