Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 125 · 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.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) keep them in your mouth (d) throw them away safely
2. 2.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) small pebbles (d) chalk powder
3. 3.True or false: a piece of thermocol sinks in water. (a) True (b) False
4. 4.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a suction hook (d) a fridge magnet
5. 5.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) powdered sugar (d) a big sugar cube
6. 6.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
7. 7.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
8. 8.True or false: cling film is needed for the water cycle bowl. (a) False (b) True
9. 9.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) forward (c) straight down (d) backward
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) sun or shade (b) how many drops form (c) the time we wait (d) the size of the bowl
11. 11.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) a clear glass of water (d) a mirror
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water is heavy (c) hot water can scald (d) it changes colour
14. 14.⚖️ 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 keep it the same (c) we change it
15. 15.True or false: the swimmer goes backward. (a) True (b) False
16. 16.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) neither of them (c) a sheet of glass (d) the flat sheet
17. 17.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
18. 18.🔍 Which is the odd one out? (a) a pebble (b) cooking oil (c) honey (d) a coin
19. 19.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) True (b) False
20. 20.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) on top of the oil (d) under the honey
21. 21.🔍 Which is the odd one out? (a) a ping-pong ball (b) honey (c) a coin (d) a pebble
22. 22.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
23. 23.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
24. 24.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a battery cell
26. 26.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a mirror (c) a balloon (d) two chairs
27. 27.⚖️ 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
28. 28.🛟 Does a cork float or sink in water? (a) sinks (b) floats
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a towel (d) a sink or a bucket
30. 30.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a battery cell (c) vinegar (d) a long string
31. 31.True or false: a dry leaf floats on water. (a) False (b) True
32. 32.🔮 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
33. 33.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) blow it till it bursts (d) put string round a neck
34. 34.True or false: a paper helicopter falls slowly through the air. (a) False (b) True
35. 35.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) turmeric powder (c) a balloon (d) sticky tape
36. 36.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a ruler (d) turmeric powder
37. 37.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) violet (d) yellow
38. 38.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) True (b) False
40. 40.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a battery cell (c) a mirror (d) a magnet

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