Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 88 · 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 turmeric test? (a) water (b) lemon juice (c) turmeric powder (d) a comb
2. 2.True or false: a jar with a tight lid is not needed for making butter. (a) True (b) False
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the person dropping (c) the drop height (d) time to reach the floor
4. 4.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a balloon (b) yeast (c) dry hair (d) a plastic comb
5. 5.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is the one thing we change. (a) True (b) False
6. 6.🔬 Which step of the scientific method is this: “My guess: the zigzag holds the most.” (a) hypothesis (b) observation (c) experiment (d) question
7. 7.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a rainbow (c) a magnet (d) a crystal
8. 8.⚖️ 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 keep it the same (b) we change it (c) we measure it
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🔭 Which of these reflects light well? (a) a dull brick (b) a shiny steel plate (c) black cloth (d) dark soil
11. 11.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a potted plant (c) a clear plastic bag (d) a mirror
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a clear glass of water
13. 13.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
15. 15.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
16. 16.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a funnel (c) muddy water (d) sand and pebbles
18. 18.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
19. 19.🌱 Which of these is needed for a seed to sprout? (a) salt (b) soil (c) sunlight (d) water
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) baking soda water (d) salt water
21. 21.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a battery cell (c) two chairs (d) turmeric powder
22. 22.True or false: cooking oil is needed for the density tower. (a) True (b) False
23. 23.True or false: a plastic ruler lets water climb up it. (a) False (b) True
24. 24.🔮 The fizzing stops after a while. Why? (a) the bottle got tired (b) the balloon got cold (c) an ingredient ran out (d) the gas froze
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a pencil and tape (d) a magnet
26. 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) amount of water drops (b) the same kind of bag (c) sun or shade
27. 27.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) sugar water (d) lemon juice
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
29. 29.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) yeast (c) a results table (d) small test objects
30. 30.🛟 Which of these is an unsafe habit? (a) working with no adult (b) tying back long hair (c) wiping up spills at once (d) washing hands afterwards
31. 31.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) time (d) vinegar
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🛟 Which of these is an unsafe habit? (a) touching a hot iron (b) reading the steps first (c) asking an adult first (d) tying back long hair
35. 35.🧺 Do we need cotton wool for sprouting seeds? (a) not needed (b) needed
36. 36.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
37. 37.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in icy water (d) sugar in warm water
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we measure it (b) we change it (c) we keep it the same
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 change it (b) we measure it (c) we keep it the same
40. 40.⚖️ Fair test — which kind of ball bounces highest? Which of these is what we measure? (a) the drop height (b) bounce height (c) the floor surface (d) the kind of ball

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