Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 119 · 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.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the same straw (c) the same string (d) distance it travels
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
3. 3.True or false: cooking oil is less dense than water. (a) True (b) False
4. 4.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a few hours of waiting
6. 6.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.True or false: a battery cell is not needed for the density tower. (a) False (b) True
8. 8.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
9. 9.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
11. 11.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
12. 12.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
13. 13.True or false: a mirror is needed for the paper helicopter. (a) False (b) True
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) turmeric powder (c) a towel for spills (d) a results table
15. 15.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar in icy water (c) sugar left unstirred (d) a big sugar cube
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a towel for spills (c) a battery cell (d) turmeric powder
19. 19.True or false: a piece of chalk lets water climb up it. (a) False (b) True
20. 20.💧 Which change is this: ice becoming water? (a) freezing (b) condensation (c) evaporation (d) melting
21. 21.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) ice cubes (c) a small cup (d) yeast
22. 22.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
23. 23.⚖️ 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
24. 24.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) wipe them dry (c) leave them wet (d) slide on them
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) the same straw (c) how big we blow it (d) the slope of the string
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
27. 27.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) only yellow light (d) tiny drops of water
28. 28.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) sugar in icy water
29. 29.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
30. 30.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) aim it at your friend (d) keep it away from faces
31. 31.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it floats higher (c) it melts (d) it turns blue
32. 32.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.⚖️ 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 kept the same. (a) False (b) True
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) a battery cell
35. 35.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) time to dissolve (c) the amount of water (d) the amount of sugar
38. 38.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
39. 39.True or false: air is less dense than water. (a) False (b) True
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the length of the blades (c) the paper clip

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