Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 729 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
2. 2.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) pour more water (c) wipe them dry (d) leave them wet
3. 3.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a balloon (c) ice cubes (d) a small cup
4. 4.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for the density tower? (a) honey (b) a magnet (c) a spoon (d) water with food colour
6. 6.🧺 Do we need a balloon for the water cycle bowl? (a) needed (b) not needed
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) whether the card stays (c) the same glass (d) the way we turn it
8. 8.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they become solid (c) they separate again (d) they turn to honey
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a few hours of waiting (d) a glass of water
10. 10.True or false: making ice lollies is evaporation. (a) True (b) False
11. 11.🧺 Which of these is needed for the paper helicopter? (a) safety scissors (b) a magnet (c) a battery cell (d) yeast
12. 12.🧺 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) turmeric powder (d) a stiff postcard
13. 13.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
14. 14.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (d) a compass needle
15. 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) a balloon (d) a battery cell
16. 16.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) the small pebble (c) neither of them (d) both of them
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a results table (d) yeast
19. 19.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it does not fall (c) it spins the other way (d) it falls upward
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the kind of paper (c) time to reach the floor
21. 21.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🌈 In VIBGYOR, what number colour is green?
23. 23.True or false: water a swimmer pushes goes backward. (a) False (b) True
24. 24.True or false: yeast is not needed for the density tower. (a) True (b) False
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a balloon (d) turmeric powder
26. 26.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a big bowl (c) yeast (d) ice cubes
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
28. 28.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
29. 29.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) how much of each liquid (c) the order of pouring
30. 30.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) cling film (c) a magnet (d) sunlight
31. 31.True or false: yeast is not needed for the water rainbow. (a) False (b) True
32. 32.🧺 Which of these is needed for the dissolving test? (a) honey (b) two clear glasses (c) a magnet (d) a balloon
33. 33.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a cotton thread (d) a piece of foil
34. 34.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it goes backward first (c) it speeds up (d) it travels farther
35. 35.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) sunshine (b) wind (c) rain (d) lightning
36. 36.🔍 Which is the odd one out? (a) a coin (b) a feather (c) a paper helicopter (d) a fluff of cotton
37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) a balloon (d) two clear glasses
38. 38.⚖️ 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 the one thing we change. (a) False (b) True
39. 39.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
40. 40.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True

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