Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 11 · 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 balloon rocket? (a) a balloon (b) a drinking straw (c) turmeric powder (d) sticky tape
2. 2.🔍 Which is the odd one out? (a) a flat tissue (b) a wet flat sheet (c) a torn flat sheet (d) a zigzag-folded sheet
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.True or false: a doorknob is an inclined plane. (a) True (b) False
6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a battery cell (c) salt (d) warm water
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.⚖️ A child tests plants with and without water, but puts one in the sun and one in a cupboard. Is it a fair test? (a) yes, if done fast (b) yes, it is fair (c) no, two things changed (d) only on Sundays
10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the slope of the string (b) distance it travels (c) how big we blow it
12. 12.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
13. 13.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
14. 14.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a sunny window (d) a magnet
16. 16.True or false: baking soda dissolves in water. (a) True (b) False
17. 17.True or false: salt water is neutral. (a) True (b) False
18. 18.🍞 Where is yeast used in the kitchen? (a) to clean floors (b) to wash dishes (c) to make bread rise (d) to colour rice
19. 19.🛟 Which of these is a safe habit? (a) touching a hot iron (b) asking an adult first (c) running with glassware (d) mixing random liquids
20. 20.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
21. 21.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it turns white (c) it dissolves (d) it sinks
22. 22.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🔍 Which is the odd one out? (a) honey (b) a glass marble (c) a ping-pong ball (d) very salty water
24. 24.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
25. 25.🍯 Which of these is denser than water? (a) a ping-pong ball (b) honey (c) a cork (d) cooking oil
26. 26.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.⚙️ Which of these uses a pulley? (a) a crowbar (b) a tap handle (c) a flagpole (d) a see-saw
29. 29.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
30. 30.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) poke it with a finger (d) smell it closely
31. 31.🛟 Which of these floats on water? (a) a pebble (b) a ping-pong ball (c) an iron nail (d) a steel spoon
32. 32.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
34. 34.🧺 Which of these is needed for the static comb? (a) a magnet (b) turmeric powder (c) a battery cell (d) tiny paper bits
35. 35.💧 Which change is this: a misty bathroom mirror? (a) condensation (b) evaporation (c) freezing (d) melting
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 kind of salt (c) sunny or shady place (d) the amount of water
37. 37.🍋 Which of these steps is a job for an adult? (a) writing the message (b) letting the paper dry (c) plugging in the iron (d) dipping the cotton bud
38. 38.True or false: a balloon is not needed for the paper helicopter. (a) True (b) False
39. 39.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) hydrogen (b) carbon dioxide (c) oxygen (d) helium

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