Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 137 · 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.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.💧 In the covered bowl, where does the water vapour come from? (a) the air outside (b) the bowl itself (c) the cling film (d) water warmed by the Sun
4. 4.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a tub of water (c) a magnet (d) a battery cell
6. 6.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) a big sugar cube (d) sugar stirred well
7. 7.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
8. 8.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) on top of the oil (d) under the honey
9. 9.🔍 Which is the odd one out? (a) a ping-pong ball (b) air (c) honey (d) cooking oil
10. 10.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
11. 11.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) evaporation (d) refraction
12. 12.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.True or false: a big sugar cube dissolves slower. (a) False (b) True
15. 15.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a mirror (d) a few hours of waiting
18. 18.🌈 In VIBGYOR, what number colour is violet?
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) False (b) True
20. 20.True or false: a big bowl is not needed for the water cycle bowl. (a) True (b) False
21. 21.🛟 Which of these sinks in water? (a) an ice cube (b) an ice-cream stick (c) a feather (d) a metal key
22. 22.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) powdered sugar (d) neither of them
23. 23.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
24. 24.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
25. 25.⚖️ 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) how much of each liquid (b) the order of the layers (c) the same glass (d) the same three liquids
26. 26.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
27. 27.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
28. 28.💧 Which change is this: drops on a cold glass? (a) melting (b) freezing (c) evaporation (d) condensation
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) whether it floats (c) the amount of clay (d) the kind of clay
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
31. 31.🧺 Do we need honey for the density tower? (a) not needed (b) needed
32. 32.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the kind of paper (b) the paper clip (c) the drop height (d) the length of the blades
33. 33.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) throw the glass (d) do not lick the spoon
34. 34.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) throw them away safely (d) keep them in your mouth
35. 35.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a paper towel (d) a sugar cube
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
37. 37.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a comb (c) sugar (d) a magnet
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the amount of water (c) time to dissolve (d) the water temperature
39. 39.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) rain (b) wind (c) lightning (d) sunshine
40. 40.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster

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