Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 581 · 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 the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
2. 2.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) a mirror (d) small test objects
3. 3.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it turns into a kite (c) it goes much farther (d) it goes less far
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) False (b) True
10. 10.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a battery cell (c) water (d) a balloon
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) time to reach the floor (b) the drop height (c) the paper clip (d) the length of the blades
12. 12.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
13. 13.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
14. 14.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) a strip of paper (c) a balloon (d) turmeric powder
16. 16.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) cotton wool (c) a clock or timer (d) a magnet
17. 17.True or false: sugar left unstirred dissolves faster. (a) False (b) True
18. 18.True or false: sugar stirred well dissolves faster. (a) True (b) False
19. 19.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
20. 20.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
21. 21.True or false: a coin sinks in water. (a) False (b) True
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a results table (c) a towel for spills (d) a tub of water
23. 23.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
24. 24.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) powdered sugar (c) the sugar cube (d) neither of them
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
27. 27.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) the bowl freezes (c) fewer drops form (d) the water turns red
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the stirring
29. 29.🌈 How many colours do we name in a rainbow (VIBGYOR)?
30. 30.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a balloon (d) yeast
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) cold water (c) warm water (d) a clock or timer
32. 32.💧 Which of these lets water climb up it? (a) a paper towel (b) a steel spoon (c) a rubber eraser (d) a piece of foil
33. 33.🔍 Which is the odd one out? (a) a metal key (b) a ball of clay (c) a pebble (d) an ice cube
34. 34.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
37. 37.True or false: sugar in warm water dissolves faster. (a) True (b) False
38. 38.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
39. 39.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the balloon (d) water a swimmer pushes
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True

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