Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 813 · 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 add two more paper clips. How does it fall? (a) slower (b) it floats up (c) it stops in the air (d) faster
2. 2.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the kind of clay (c) the tub of water (d) the amount of clay
4. 4.True or false: sugar left unstirred dissolves slower. (a) True (b) False
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) yeast (d) a battery cell
6. 6.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a balloon
8. 8.💧 Which of these is condensation? (a) ice becoming water (b) drops under a pot lid (c) butter going runny (d) water becoming ice
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) the same straw (c) distance it travels (d) how big we blow it
10. 10.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they mix for ever (c) they turn to honey (d) they separate again
11. 11.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a battery cell (d) a tall clear glass
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the kind of flower (c) time for colour to show
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.True or false: a magnet is needed for the water rainbow. (a) True (b) False
17. 17.⚖️ 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 “how much of each liquid”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
20. 20.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it sinks (d) it still floats
21. 21.📘 What is water vapour? (a) tiny ice cubes (b) water as a gas (c) salty water (d) a kind of smoke
22. 22.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
23. 23.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) oil turns into honey (d) spilled oil is slippery
24. 24.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
25. 25.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) small pebbles (d) chalk powder
27. 27.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
29. 29.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) a sunny window (d) a battery cell
30. 30.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
31. 31.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is magnetic (c) hot water is heavy (d) it changes colour
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is what we measure. (a) False (b) True
33. 33.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a battery cell (c) a drinking straw (d) turmeric powder
34. 34.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
35. 35.🌈 In VIBGYOR, what number colour is yellow?
36. 36.🔍 Which is the odd one out? (a) a glass marble (b) a metal key (c) an ice cube (d) an iron nail
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sunny window (c) a clear glass of water (d) bright sunlight
38. 38.🥄 Which of these does not dissolve in water? (a) table salt (b) food colour (c) sugar (d) small pebbles
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) False (b) True
40. 40.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed

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