Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 229 · 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.🔍 Which is the odd one out? (a) a feather (b) a toy parachute (c) a paper helicopter (d) a glass marble
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
3. 3.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) the sugar turns to salt (c) all of it dissolves (d) some stays undissolved
4. 4.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) more friction, less far (c) less friction (d) it goes faster
5. 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) vinegar (c) a drinking straw (d) a long string
6. 6.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
7. 7.🧺 Do we need yeast for the density tower? (a) not needed (b) needed
8. 8.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) the big log (c) both of them (d) neither of them
9. 9.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) keep them in your mouth (c) give them to a baby (d) chew them
10. 10.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
11. 11.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
12. 12.True or false: a magnet is needed for the paper helicopter. (a) False (b) True
13. 13.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) cooking oil (c) turmeric powder (d) a spoon
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
17. 17.True or false: a pond icing over is freezing. (a) False (b) True
18. 18.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they separate again (d) they mix for ever
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a teaspoon (c) honey (d) cold water
20. 20.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
21. 21.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the kind of sugar (c) time to dissolve
23. 23.⚖️ 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 kept the same. (a) True (b) False
24. 24.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
25. 25.True or false: a mirror is needed for the dissolving test. (a) False (b) True
26. 26.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) behind you (d) under the ground
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the length of the stem (c) the kind of flower (d) the amount of colour
28. 28.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) faster (c) not at all (d) slower
29. 29.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water can scald (c) it changes colour (d) hot water is heavy
30. 30.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
31. 31.💧 Which of these does not let water climb? (a) a piece of chalk (b) a glass marble (c) a sugar cube (d) a flower stem
32. 32.True or false: a ruler is not needed for the paper helicopter. (a) False (b) True
33. 33.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) lightning (c) sunshine (d) rain
34. 34.⚖️ 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 order of pouring (b) how much of each liquid (c) the same glass (d) the order of the layers
35. 35.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) a sunny window (d) a clear glass of water
37. 37.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
38. 38.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a white flower (d) turmeric powder
40. 40.🧺 Do we need a balloon for the water cycle bowl? (a) not needed (b) needed

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