Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 694 · 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 vinegar for the balloon rocket? (a) needed (b) not needed
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
4. 4.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of thermocol (c) a ball of clay (d) an iron nail
7. 7.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) faster (c) they never dry (d) they turn to ice
8. 8.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sugar (d) chalk powder
10. 10.🔍 Which is the odd one out? (a) sweat drying on skin (b) drops under a pot lid (c) a misty bathroom mirror (d) drops on a cold glass
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
12. 12.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) True (b) False
13. 13.True or false: yeast is needed for the density tower. (a) False (b) True
14. 14.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
15. 15.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
16. 16.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels less far (d) it travels farther
17. 17.💧 Which of these is melting? (a) wet clothes drying (b) sweat drying on skin (c) ice becoming water (d) making ice lollies
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
19. 19.💧 Which of these is condensation? (a) water becoming ice (b) a pond icing over (c) snow turning to water (d) drops under a pot lid
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) time for colour to show (b) the length of the stem (c) the amount of water (d) the kind of flower
21. 21.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to cool the glass (d) to make it rain
22. 22.True or false: cling film is not needed for the water cycle bowl. (a) True (b) False
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a magnet (d) a spoon
24. 24.True or false: a plastic ruler lets water climb up it. (a) False (b) True
25. 25.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) throw them away safely (c) chew them (d) keep them in your mouth
26. 26.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) smell it closely (d) look for leftover grains
27. 27.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) small test objects (d) turmeric powder
28. 28.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.⚖️ 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 change it (b) we measure it (c) we keep it the same
30. 30.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
31. 31.🔍 Which layer is on top in the honey-water-oil tower? (a) the spoon (b) honey (c) coloured water (d) cooking oil
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a mirror (d) food colour
33. 33.True or false: a magnet is needed for the water rainbow. (a) True (b) False
34. 34.💧 Which change is this: ice becoming water? (a) condensation (b) evaporation (c) freezing (d) melting
35. 35.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) a little shaking (d) lots of salt stirred in
36. 36.True or false: glucose powder does not dissolve in water. (a) True (b) False
37. 37.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) throw the glass (c) taste each layer (d) do not lick the spoon
39. 39.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) the flat sheet (c) a sheet of glass (d) the crumpled ball
40. 40.True or false: a ball of clay sinks in water. (a) True (b) False

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