Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 90 · 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.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
2. 2.True or false: a paper towel lets water climb up it. (a) False (b) True
3. 3.🥄 Which of these dissolves in water? (a) chalk powder (b) table salt (c) sawdust (d) cooking oil
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) yeast (c) small test objects (d) a results table
6. 6.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
7. 7.True or false: very salty water is denser than water. (a) False (b) True
8. 8.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels farther (d) it travels less far
9. 9.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) powdered sugar (c) neither of them (d) the sugar cube
10. 10.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) small test objects (d) a results table
12. 12.🔍 Which is the odd one out? (a) drops on a cold glass (b) drops under a pot lid (c) a misty bathroom mirror (d) a puddle drying up
13. 13.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they stay white (d) they turn two colours
15. 15.True or false: a compass needle works by air pressure. (a) True (b) False
16. 16.True or false: honey is needed for the density tower. (a) True (b) False
17. 17.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to salt (b) it turns to drops (c) it turns to smoke (d) it disappears
18. 18.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
19. 19.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
20. 20.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a magnet
21. 21.True or false: yeast is needed for the balloon rocket. (a) False (b) True
22. 22.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) leave them wet (c) wipe them dry (d) pour more water
24. 24.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
25. 25.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) cling film (c) a big bowl (d) yeast
26. 26.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) True (b) False
29. 29.🚀 Which of these goes forward? (a) the swimmer (b) water from the oars (c) gas from the rocket (d) air from the balloon
30. 30.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) pour it on the floor (d) do not lick the spoon
31. 31.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it dissolves (d) it sinks
33. 33.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) sugar in warm water (d) a big sugar cube
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a tub of water (c) a towel for spills (d) small test objects
35. 35.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
36. 36.⚖️ 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 the layers (b) the same glass (c) the same three liquids (d) the order of pouring
37. 37.True or false: an ice-cream stick sinks in water. (a) False (b) True
38. 38.True or false: cooking oil is less dense than water. (a) True (b) False
39. 39.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a magnet (c) honey (d) warm water
40. 40.True or false: the swimmer goes backward. (a) True (b) False

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