Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 624 · 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.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of water (b) time to dissolve (c) the water temperature
2. 2.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to keep children safe (d) to splash everyone
3. 3.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
4. 4.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) a sheet of white paper (d) a battery cell
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
6. 6.🥄 Which of these dissolves slower? (a) sugar stirred well (b) a big sugar cube (c) sugar in warm water (d) powdered sugar
7. 7.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) fewer drops form (c) more drops form (d) the water turns red
8. 8.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) the card gets wet (d) water is heavier
9. 9.🍯 Is air denser or less dense than water? (a) less dense than water (b) denser than water
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is what we measure. (a) False (b) True
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
12. 12.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) wipe them dry (c) pour more water (d) slide on them
13. 13.True or false: a strip of cloth lets water climb up it. (a) True (b) False
14. 14.💧 Which of these is freezing? (a) sweat drying on skin (b) a pond icing over (c) a misty bathroom mirror (d) wet clothes drying
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
18. 18.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.True or false: honey is needed for the density tower. (a) False (b) True
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) turmeric powder (d) a glass of water
21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.True or false: dew on morning grass is condensation. (a) False (b) True
23. 23.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
24. 24.True or false: turmeric powder is not needed for the paper helicopter. (a) False (b) True
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a battery cell
26. 26.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) a paper cutter (c) sharp kitchen shears (d) safety scissors
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is what we measure. (a) True (b) False
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🥄 Which of these dissolves in water? (a) small pebbles (b) glucose powder (c) sand (d) cooking oil
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) a teaspoon (c) two clear glasses (d) a clock or timer
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same tape (c) the slope of the string (d) the same straw
32. 32.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
33. 33.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
34. 34.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
35. 35.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
36. 36.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
37. 37.🌈 How many colours do we name in a rainbow (VIBGYOR)?
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) True (b) False
39. 39.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
40. 40.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward

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