Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 13 · 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 needed for the density tower? (a) a balloon (b) a battery cell (c) yeast (d) a spoon
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.True or false: salt water is a base. (a) True (b) False
4. 4.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
6. 6.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) when it turns blue (d) it never stops
7. 7.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
8. 8.💧 Which of these lets water climb up it? (a) a piece of foil (b) a paper towel (c) a steel spoon (d) a rubber eraser
9. 9.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) slower (d) quicker
10. 10.🧺 Which of these is not needed for sprouting seeds? (a) a few days (b) yeast (c) cotton wool (d) moong seeds
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the same cup of coins (c) number of pulleys (d) the same string
12. 12.⚖️ Fair test — which kind of ball bounces highest? True or false: the drop height is what we measure. (a) True (b) False
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a balloon (d) a towel
14. 14.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) both the same (b) the cool cloudy day (c) the hot sunny day (d) neither of them
15. 15.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
16. 16.🧺 Which of these is not needed for the magnet test? (a) a tray (b) a bar magnet (c) a results chart (d) a battery cell
17. 17.🛟 Is this a safe or an unsafe habit in an experiment: running with glassware? (a) unsafe (b) safe
18. 18.True or false: a round pillar gets its strength from arches or domes. (a) True (b) False
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is what we measure? (a) number of rubs (b) the paper bit size (c) the same comb (d) paper bits picked up
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same comb is what we measure. (a) False (b) True
23. 23.⚖️ 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 tub of water (b) whether it floats (c) the amount of clay (d) the shape of the clay
24. 24.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? Which of these is what we measure? (a) the same table (b) the magnet used (c) sheets it pulls through (d) the same paper clip
26. 26.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) a battery cell (d) warm water
27. 27.True or false: a feather floats on water. (a) True (b) False
28. 28.True or false: an adult with an iron is needed for the secret lemon message. (a) True (b) False
29. 29.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) yeast (c) a magnet (d) a balloon
30. 30.🔍 Which is the odd one out? (a) drops on a cold glass (b) dew on morning grass (c) sweat drying on skin (d) drops under a pot lid
31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) False (b) True
32. 32.🧺 Do we need yeast for the static comb? (a) needed (b) not needed
33. 33.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
34. 34.True or false: sawdust dissolves in water. (a) False (b) True
35. 35.🧲 Two magnets: south near north. Do they pull together or push apart? (a) push apart (b) pull together
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the same glass (c) the amount poured (d) the same funnel
37. 37.True or false: water is needed for a seed to sprout. (a) False (b) True
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a balloon (c) string (d) an empty thread reel
39. 39.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) honey (c) a magnet (d) a tall clear glass

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