Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 548 · 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: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it sinks (d) it floats higher
2. 2.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
3. 3.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) yeast
5. 5.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) only yellow light (d) tiny drops of water
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) a balloon
7. 7.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) turmeric powder (d) a few hours of waiting
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) False (b) True
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) the amount of water (c) the time of day (d) brightness of rainbow
12. 12.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
13. 13.🌈 In VIBGYOR, what number colour is green?
14. 14.True or false: a balloon is needed for the water cycle bowl. (a) True (b) False
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) True (b) False
16. 16.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) turmeric powder (d) cooking oil
17. 17.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
18. 18.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
19. 19.True or false: an open sheet of paper falls slowly through the air. (a) True (b) False
20. 20.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is the one thing we change. (a) True (b) False
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) a battery cell (d) small test objects
23. 23.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a mirror
26. 26.True or false: ice becoming water is freezing. (a) False (b) True
27. 27.True or false: a battery cell is needed for the water cycle bowl. (a) False (b) True
28. 28.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
29. 29.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it spins the other way (c) it falls upward (d) it turns blue
30. 30.🔍 Which is the odd one out? (a) ice becoming water (b) butter going runny (c) a pond icing over (d) snow turning to water
31. 31.True or false: a paper towel does not let water climb. (a) False (b) True
32. 32.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they all turn green (d) they fall off at once
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) False (b) True
34. 34.💧 Which of these does not let water climb? (a) a plastic ruler (b) a cotton thread (c) a sugar cube (d) a piece of chalk
35. 35.🚀 Which of these goes backward? (a) the balloon (b) water a swimmer pushes (c) the rowing boat (d) the rocket
36. 36.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
37. 37.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) yeast (c) a results table (d) a towel for spills
38. 38.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) a paper cutter (c) safety scissors (d) sharp kitchen shears
39. 39.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it turns into a ball (c) it spins round (d) it flies upward
40. 40.True or false: yeast is needed for the water cycle bowl. (a) True (b) False

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