Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 523 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) the same (d) slower
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is kept the same. (a) False (b) True
4. 4.💧 Which of these is melting? (a) sweat drying on skin (b) wet hair drying (c) wet clothes drying (d) ice becoming water
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) turmeric powder (b) cooking oil (c) a tall clear glass (d) honey
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
8. 8.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) safety scissors (c) sharp kitchen shears (d) a paper cutter
9. 9.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
10. 10.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) powdered sugar (d) sugar left unstirred
11. 11.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
12. 12.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
13. 13.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is less dense (c) oil is hot (d) oil is heavier
14. 14.True or false: a toy parachute falls fast through the air. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) sugar (d) sawdust
16. 16.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) the rocket (d) water from the oars
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) a clear glass of water (d) bright sunlight
18. 18.True or false: honey is less dense than water. (a) False (b) True
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) yeast (c) honey (d) a tall clear glass
20. 20.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it goes less far (c) it turns into a kite (d) it flies off the string
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it will not break (d) it is hotter
22. 22.🥛 Which of these works by air pressure? (a) a compass needle (b) a suction hook (c) a fridge magnet (d) a magnetic chess set
23. 23.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to grow plants (d) to cool the glass
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) yeast (c) a results table (d) a battery cell
26. 26.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) False (b) True
27. 27.⚖️ 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 three liquids (b) the same glass (c) the order of the layers (d) the order of pouring
28. 28.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a steel spoon (d) a piece of foil
29. 29.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a glass of water (d) turmeric powder
33. 33.🚁 Which of these falls slowly through the air? (a) a coin (b) a paper helicopter (c) a crumpled paper ball (d) a glass marble
34. 34.💧 Which change is this: making ice lollies? (a) melting (b) condensation (c) freezing (d) evaporation
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a battery cell (d) a balloon
36. 36.⚖️ 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 tub of water (d) the amount of clay
37. 37.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a vacuum cleaner (d) a magnetic pin holder
38. 38.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the stickiest (c) it is the coldest (d) it is yellow
39. 39.⚖️ 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
40. 40.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a stone (c) a paper helicopter (d) a steel spoon

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