Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 237 · 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 balloon for the water rainbow? (a) needed (b) not needed
2. 2.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) False (b) True
4. 4.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it floats higher (d) it sinks
5. 5.🚀 Which of these goes forward? (a) air from the balloon (b) the balloon (c) water a swimmer pushes (d) gas from the rocket
6. 6.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it bounces up (c) it floats (d) it sinks
7. 7.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a magnet (c) yeast (d) a results table
9. 9.True or false: turmeric powder is needed for the paper helicopter. (a) True (b) False
10. 10.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) spilled oil is slippery (d) oil turns into honey
11. 11.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) lightning (b) wind (c) rain (d) sunshine
12. 12.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) powdered sugar (d) the sugar cube
13. 13.⚖️ 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 pouring”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) food colour (d) a few hours of waiting
16. 16.🧺 Do we need honey for the density tower? (a) needed (b) not needed
17. 17.True or false: sunlight is not needed for the water cycle bowl. (a) False (b) True
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a mirror
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
21. 21.🔍 Which is the odd one out? (a) a glass marble (b) a feather (c) a crumpled paper ball (d) a stone
22. 22.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the flower floats away (d) the petals turn bluish
25. 25.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
26. 26.🥄 Which of these dissolves faster? (a) powdered sugar (b) a big sugar cube (c) sugar left unstirred (d) sugar in icy water
27. 27.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a steel spoon (d) a glass marble
30. 30.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
31. 31.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) honey (c) a tall clear glass (d) turmeric powder
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) an ice-cream stick (b) a ping-pong ball (c) a piece of thermocol (d) a pebble
36. 36.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water
38. 38.True or false: a paper helicopter falls fast through the air. (a) True (b) False
39. 39.⚖️ 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 what we measure. (a) True (b) False
40. 40.True or false: an ice cube sinks in water. (a) False (b) True

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