Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 109 · 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 moving the coins farther from the pencil make that side go down more? What do we do with “the number of coins”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) True (b) False
3. 3.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) an object blocks light (d) light bends round it
4. 4.🧺 Which of these is not needed for the paper helicopter? (a) a battery cell (b) a ruler (c) a pencil (d) a paper clip
5. 5.True or false: a feather floats on water. (a) True (b) False
6. 6.⚡ A rubbed comb is held near a brick. What happens? (a) does not move (b) jumps to the comb
7. 7.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: number of rubs is kept the same. (a) False (b) True
8. 8.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
9. 9.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) it changes colour (c) hot water is heavy (d) hot water can scald
10. 10.True or false: a magnet is not needed for the ruler lever. (a) False (b) True
11. 11.True or false: yeast is not needed for the static comb. (a) True (b) False
12. 12.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
13. 13.True or false: a dull brick reflects light well. (a) True (b) False
14. 14.🔬 How many steps are there in our scientific method (question to conclusion)?
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
16. 16.⚖️ 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
17. 17.🪴 Through which part does a plant take in water from the soil? (a) the leaves (b) the fruits (c) the flowers (d) the roots
18. 18.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
19. 19.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the amount of water (c) the amount of sugar (d) the same bottles
20. 20.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
21. 21.🧺 Which of these is needed for the paper bridge? (a) coins (b) turmeric powder (c) a magnet (d) a balloon
22. 22.True or false: sugar is not needed for the yeast balloon. (a) False (b) True
23. 23.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
24. 24.True or false: turmeric powder is not needed for the static comb. (a) False (b) True
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) yeast (d) sand and pebbles
26. 26.🏗️ Which of these gets its strength from triangles? (a) an old stone bridge (b) an electric tower (c) a temple dome (d) a hollow bird bone
27. 27.🌈 How many colours do we name in a rainbow (VIBGYOR)?
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) an empty bottle (c) a comb (d) baking soda
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
31. 31.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the number of coins is kept the same. (a) False (b) True
32. 32.True or false: a torn flat sheet makes a weak bridge. (a) True (b) False
33. 33.True or false: salt is not needed for a seed to sprout. (a) True (b) False
34. 34.True or false: wiping up spills at once is an unsafe habit. (a) True (b) False
35. 35.True or false: a steering wheel is a lever. (a) True (b) False
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the same dish (b) the amount of salt (c) the kind of salt (d) sunny or shady place
37. 37.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
38. 38.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) yes, much faster (d) no, hardly at all
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) in the water layer (c) under the honey (d) in the honey layer

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