Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 734 · 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.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) a teaspoon (c) cold water (d) two clear glasses
3. 3.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
4. 4.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) its hollow shape (d) steel is very light
5. 5.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a drinking straw (c) a balloon (d) a magnet
7. 7.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a cotton thread (d) a plastic ruler
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a pencil (c) a ruler (d) a mirror
11. 11.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) time for colour to show (c) the kind of flower (d) the amount of colour
13. 13.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a paper towel (d) a flower stem
14. 14.🥄 Which of these does not dissolve in water? (a) food colour (b) chalk powder (c) glucose powder (d) table salt
15. 15.🧺 Which of these is not needed for the paper helicopter? (a) turmeric powder (b) a paper clip (c) a ruler (d) a strip of paper
16. 16.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a fridge magnet (d) a magnetic chess set
17. 17.💧 Which of these is evaporation? (a) wet hair drying (b) water becoming ice (c) a misty bathroom mirror (d) snow turning to water
18. 18.🔍 Which is the odd one out? (a) a dry leaf (b) a ping-pong ball (c) an ice cube (d) a glass marble
19. 19.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a feather (c) a stone (d) a paper helicopter
20. 20.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) a sheet of glass (c) the flat sheet (d) the crumpled ball
21. 21.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) yeast (d) a results table
22. 22.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.True or false: a battery cell is needed for the density tower. (a) True (b) False
25. 25.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) do not lick the spoon (c) throw the glass (d) taste each layer
26. 26.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) violet (d) blue
27. 27.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
28. 28.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is magnetic (d) hot water is heavy
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.True or false: honey is not needed for the density tower. (a) False (b) True
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.⚖️ 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) time to reach the floor (c) the person dropping
33. 33.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a paper helicopter (c) a stone (d) a glass marble
34. 34.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a results table (c) a towel for spills (d) small test objects
36. 36.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) turmeric powder (c) a magnet (d) a clear glass of water
37. 37.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
38. 38.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
39. 39.🌈 In VIBGYOR, what number colour is orange?
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False

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