Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 707 · 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.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) two chairs (d) a battery cell
2. 2.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
3. 3.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) coloured water (c) honey (d) the spoon
4. 4.🔍 Which is the odd one out? (a) cooking oil (b) a cork (c) air (d) honey
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
7. 7.💧 Which of these is melting? (a) dew on morning grass (b) ice becoming water (c) drops on a cold glass (d) a pond icing over
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a towel for spills (c) turmeric powder (d) a balloon
9. 9.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
10. 10.🧺 Do we need a battery cell for the water cycle bowl? (a) not needed (b) needed
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) a small cup (c) cling film (d) water
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a stiff postcard (c) a sink or a bucket (d) a towel
17. 17.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) glucose powder (d) sand
18. 18.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) water (c) a small cup (d) a big bowl
19. 19.💧 Which of these is freezing? (a) a puddle drying up (b) dew on morning grass (c) water becoming ice (d) butter going runny
20. 20.📘 What does “dense” mean? (a) very hot (b) heavy for its size (c) very thin (d) very colourful
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a battery cell
22. 22.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) food colour (d) sawdust
24. 24.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
25. 25.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) gardening shears (c) a paper cutter (d) sharp kitchen shears
26. 26.🔍 Which is the odd one out? (a) a pebble (b) very salty water (c) honey (d) an ice cube
27. 27.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes less far (d) it goes much farther
28. 28.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
29. 29.🌈 How many colours do we name in a rainbow (VIBGYOR)?
30. 30.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
31. 31.⚖️ 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 time of day (b) the same white paper (c) the same glass (d) the amount of water
32. 32.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
33. 33.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a mirror (c) a clock or timer (d) a teaspoon
34. 34.True or false: turmeric powder is not needed for the water cycle bowl. (a) True (b) False
35. 35.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) the rowing boat (d) water from the oars
36. 36.True or false: a metal key sinks in water. (a) False (b) True
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a balloon (c) yeast (d) a long string
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) a drinking straw (c) sticky tape (d) two chairs
39. 39.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
40. 40.🔍 Which is the odd one out? (a) a piece of thermocol (b) an iron nail (c) an ice cube (d) an empty capped bottle

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