Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 226 · 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 battery cell for the water rainbow? (a) not needed (b) needed
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the stirring (c) the water temperature (d) the kind of sugar
3. 3.⚖️ 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 pouring (b) the order of the layers (c) the same three liquids (d) the same glass
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a feather (c) a toy parachute (d) a fluff of cotton
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
8. 8.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they never dry (c) they turn to ice (d) faster
9. 9.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a battery cell (b) honey (c) a tall clear glass (d) a spoon
10. 10.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) warm water is thicker (c) particles move faster (d) sugar likes the dark
11. 11.True or false: a battery cell is not needed for the paper helicopter. (a) False (b) True
12. 12.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they separate again (c) they turn to honey (d) they mix for ever
13. 13.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
14. 14.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a tub of water (d) yeast
15. 15.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) the same glass (c) the order of the layers (d) the order of pouring
16. 16.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a balloon (d) a magnet
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) True (b) False
19. 19.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
20. 20.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
21. 21.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) wipe them dry (c) pour more water (d) slide on them
22. 22.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) turmeric powder
24. 24.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) more plain water (c) a few ice cubes (d) lots of salt stirred in
25. 25.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) how much of each liquid (c) the order of pouring
26. 26.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) gardening shears (c) a paper cutter (d) sharp kitchen shears
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a towel (c) a balloon (d) a glass of water
28. 28.🧺 Do we need turmeric powder for the paper helicopter? (a) not needed (b) needed
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) the amount of water (c) the same glass (d) brightness of rainbow
30. 30.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
31. 31.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
32. 32.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) yellow (c) orange (d) violet
33. 33.True or false: a long string is needed for the balloon rocket. (a) False (b) True
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same window (b) brightness of rainbow (c) the amount of water
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) a balloon
37. 37.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
38. 38.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is what we measure. (a) True (b) False
40. 40.🌈 How many colours do we name in a rainbow (VIBGYOR)?

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