Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 19 · 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 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 keep it the same (b) we measure it (c) we change it
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the amount of colour
3. 3.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) they turn blue (b) they turn wet (c) nothing happens (d) the bits jump to it
4. 4.🚁 Which of these falls slowly through the air? (a) a coin (b) a crumpled paper ball (c) a toy parachute (d) a stone
5. 5.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a paper towel
6. 6.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the order of pouring (c) the same three liquids
7. 7.⚖️ 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 glass”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.☀️ What is white sunlight really made of? (a) tiny drops of water (b) many colours mixed (c) tiny bits of dust (d) only yellow light
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.⚖️ Fair test — which paper shape holds the most coins? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
12. 12.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? Which of these is what we measure? (a) the magnet used (b) the same paper clip (c) the kind of paper (d) sheets it pulls through
13. 13.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is what we measure? (a) paper bits picked up (b) the same comb (c) number of rubs (d) the paper bit size
14. 14.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a ramp (c) a tap handle (d) a sloping road
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) False (b) True
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) True (b) False
17. 17.🧺 Which of these is not needed for sprouting seeds? (a) water (b) yeast (c) a few days (d) a small bowl
18. 18.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns blue (b) more butter forms (c) no butter forms (d) it turns to cheese
19. 19.🔬 In the scientific method, which step number is “do the experiment”?
20. 20.🧈 What is the watery liquid left after the butter forms? (a) vinegar (b) buttermilk (c) oil (d) honey
21. 21.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is cold (c) it is sticky (d) it is magnetic
22. 22.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
24. 24.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a small bowl (c) yeast (d) a few days
25. 25.True or false: a mirror is needed for the shadow clock. (a) False (b) True
26. 26.True or false: a glass marble falls fast through the air. (a) False (b) True
27. 27.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
28. 28.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) sugar stirred well
29. 29.True or false: a steel spoon does not let water climb. (a) False (b) True
30. 30.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a strip of paper (c) turmeric powder (d) a pencil
31. 31.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
32. 32.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) exactly the same (c) much less water (d) much more water
33. 33.🛟 After the yeast experiment, what should you do with the mixture? (a) keep it for a month (b) throw it at a wall (c) pour it down the sink (d) put it in your mouth
34. 34.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) yeast (d) a white flower
36. 36.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
37. 37.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
38. 38.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a drinking straw
39. 39.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) the same (b) easier (c) harder (d) impossible
40. 40.True or false: sunlight is needed for the water cycle bowl. (a) True (b) False

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