Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 90 · 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.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
2. 2.True or false: a paper clip is not needed for the yeast balloon. (a) False (b) True
3. 3.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) an empty thread reel (d) turmeric powder
4. 4.🪴 Which of these is a job of the roots? (a) carry water upward (b) hold up the leaves (c) make food in sunlight (d) take in water from soil
5. 5.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) yeast (c) a tub of water (d) small test objects
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) False (b) True
9. 9.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) sharp kitchen shears (c) gardening shears (d) a paper cutter
10. 10.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) vinegar (c) a balloon (d) a seed
11. 11.🧺 Do we need a comb for the fizzy balloon? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a pencil (d) safety scissors
13. 13.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) an empty thread reel (d) a magnet
15. 15.🛟 What is a safe way to use a ruler as a lever? (a) press it gently (b) stand on the ruler (c) flick coins at faces (d) bend it till it snaps
16. 16.🪴 Which of these is a job of the roots? (a) hold up the leaves (b) hold the plant in soil (c) carry water upward (d) make food in sunlight
17. 17.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it speeds up (c) it travels less far (d) it goes backward first
18. 18.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
19. 19.🔍 Which is the odd one out? (a) air (b) sunlight (c) warmth (d) water
20. 20.🛟 Is this a safe or an unsafe habit in an experiment: putting things in mouth? (a) unsafe (b) safe
21. 21.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls slowly (b) falls fast
22. 22.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) air (d) a wooden board
23. 23.True or false: two chairs is needed for the balloon rocket. (a) True (b) False
24. 24.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) the same cup of coins (c) how hard we must pull (d) number of pulleys
26. 26.🔦 Which of these is opaque? (a) clear glass (b) oily paper (c) a brick (d) clear plastic film
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) spoons of baking soda (c) the amount of vinegar (d) the kind of balloon
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “number of rubs”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🧺 Which of these is needed for the pendulum? (a) a string (b) turmeric powder (c) a magnet (d) yeast
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
33. 33.True or false: a plastic comb is not needed for the static comb. (a) False (b) True
34. 34.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is the one thing we change? (a) the kind of coins (b) the same ruler (c) where the pencil is (d) distance from the pencil
35. 35.🧺 Which of these is needed for the water cycle bowl? (a) water (b) yeast (c) turmeric powder (d) a mirror
36. 36.True or false: cooking oil dissolves in water. (a) True (b) False
37. 37.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a paper clip (b) a small bottle (c) dry yeast (d) warm water
38. 38.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
39. 39.True or false: an adult with an iron is not needed for the secret lemon message. (a) False (b) True
40. 40.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False

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