Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 57 · 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.🥄 Which of these dissolves faster? (a) powdered sugar (b) sugar in icy water (c) sugar left unstirred (d) a big sugar cube
2. 2.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to keep children safe (d) to win a prize
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) look at it in a mirror (d) stare at the Sun
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) water (d) sand
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
7. 7.🧺 Do we need a balloon for the water cycle bowl? (a) not needed (b) needed
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) a sheet of glass (c) the crumpled ball (d) neither of them
10. 10.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) red (d) orange
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the length of the blades (c) the paper clip (d) time to reach the floor
13. 13.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) some water evaporates (c) it turns to ice (d) it turns to salt
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a glass of water
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a balloon
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the amount of clay (c) the tub of water (d) whether it floats
17. 17.True or false: cooking oil is less dense than water. (a) True (b) False
18. 18.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
19. 19.True or false: a magnet is not needed for the paper helicopter. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a sugar cube (d) a plastic ruler
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
22. 22.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.True or false: table salt dissolves in water. (a) False (b) True
25. 25.True or false: a sugar cube does not let water climb. (a) True (b) False
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) warm water (c) sugar (d) a teaspoon
27. 27.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in icy water (c) powdered sugar (d) sugar in warm water
28. 28.💧 Which of these is evaporation? (a) a puddle drying up (b) drops under a pot lid (c) dew on morning grass (d) making ice lollies
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same glass (b) brightness of rainbow (c) the same window (d) the amount of water
30. 30.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
31. 31.🌈 In VIBGYOR, what number colour is indigo?
32. 32.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) it goes faster (c) more friction, less far (d) less friction
33. 33.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a pebble (b) a coin (c) cooking oil (d) a glass marble
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a battery cell
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) throw them away safely (d) give them to a baby
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🌈 In VIBGYOR, what number colour is green?
40. 40.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve

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