Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 27 · 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.True or false: the balloon goes forward. (a) False (b) True
2. 2.🔮 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
3. 3.🧺 Which of these is not needed for the magnet test? (a) a results chart (b) a tray (c) yeast (d) test objects
4. 4.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
5. 5.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the kind of clay (b) the shape of the clay (c) the amount of clay (d) the tub of water
7. 7.True or false: a flower stem does not let water climb. (a) True (b) False
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is what we measure. (a) True (b) False
9. 9.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same white paper (b) brightness of rainbow (c) the same glass (d) the amount of water
11. 11.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) two chairs (d) a battery cell
12. 12.💧 Which change is this: a puddle drying up? (a) melting (b) evaporation (c) freezing (d) condensation
13. 13.⚖️ 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 glass (b) the order of the layers (c) the order of pouring (d) the same three liquids
14. 14.🌉 Which of these makes a strong bridge? (a) a U-shaped channel (b) one flat sheet (c) a flat tissue (d) a wet flat sheet
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the stirring (c) the water temperature
16. 16.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) two small mirrors (d) yeast
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🔁 Why should we repeat an experiment a few times? (a) to check results agree (b) to change answers (c) to waste time (d) to get tired
19. 19.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.True or false: a roof frame gets its strength from triangles. (a) False (b) True
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a pencil (d) yeast
22. 22.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) black cloth
23. 23.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a balloon
25. 25.🫧 Which of these is an acid? (a) plain water (b) sugar water (c) detergent water (d) vinegar
26. 26.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
28. 28.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) shadow length (c) the stick kept upright
30. 30.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) keep them in your mouth (d) throw them away safely
31. 31.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
33. 33.True or false: honey is less dense than water. (a) True (b) False
34. 34.🌈 How many colours do we name in a rainbow (VIBGYOR)?
35. 35.🌉 Why does a zigzag-folded sheet hold more coins than a flat one? (a) folds make it wet (b) folds add glue (c) folds make it stiffer (d) folds are magnetic
36. 36.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
37. 37.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) the same bottle (c) spoons of baking soda (d) the kind of balloon
38. 38.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) easier (d) harder
39. 39.🥄 Which of these dissolves in water? (a) small pebbles (b) baking soda (c) sawdust (d) cooking oil
40. 40.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False

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