Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 583 · 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.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
2. 2.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a piece of foil (d) a plastic ruler
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a towel (c) a magnet (d) a glass of water
4. 4.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a mirror (d) a white flower
6. 6.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) pour it on the floor (c) do not lick the spoon (d) taste each layer
7. 7.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water
8. 8.True or false: the rowing boat goes forward. (a) True (b) False
9. 9.True or false: honey is needed for the dissolving test. (a) False (b) True
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) how big we blow it (c) the same tape (d) distance it travels
12. 12.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
13. 13.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they turn to honey (c) they separate again (d) they mix for ever
14. 14.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) a balloon (c) turmeric powder (d) a small cup
15. 15.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) powdered sugar (d) both the same
16. 16.🧺 Which of these is not needed for the water cycle bowl? (a) a magnet (b) water (c) sunlight (d) a big bowl
17. 17.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) the same (c) not at all (d) slower
18. 18.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) cooking oil (c) coloured water (d) the spoon
19. 19.🔍 Which is the odd one out? (a) a ping-pong ball (b) an empty capped bottle (c) a piece of thermocol (d) a metal key
20. 20.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
21. 21.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) a big sugar cube (d) sugar stirred well
22. 22.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) wipe them dry (c) slide on them (d) pour more water
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 order of pouring is the one thing we change. (a) False (b) True
24. 24.⚖️ 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) the length of the stem (b) the room it stands in (c) time for colour to show (d) the amount of colour
25. 25.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
26. 26.🍯 Which of these is less dense than water? (a) a coin (b) very salty water (c) a cork (d) a pebble
27. 27.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
28. 28.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same white paper (c) the same glass (d) the same window
30. 30.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a suction hook
31. 31.🌈 How many colours do we name in a rainbow (VIBGYOR)?
32. 32.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a steel spoon (d) a paper towel
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) True (b) False
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) a battery cell (d) cooking oil
35. 35.🧺 Which of these is needed for the dissolving test? (a) honey (b) cold water (c) a mirror (d) a comb
36. 36.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a battery cell (c) a balloon (d) a sunny window
37. 37.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it sinks faster (c) it can float (d) it dissolves
38. 38.True or false: an open sheet of paper falls fast through the air. (a) False (b) True
39. 39.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a towel for spills (d) a battery cell

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