Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 14 · 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.⚖️ 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 change it (c) we keep it the same
2. 2.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) cotton wool (c) a magnet (d) two clear glasses
3. 3.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
4. 4.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
5. 5.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) the crumpled ball (c) neither of them (d) a sheet of glass
6. 6.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) clouds (d) balloons
7. 7.True or false: a magnet is needed for the density tower. (a) True (b) False
8. 8.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the coldest (c) it is the stickiest (d) it is yellow
9. 9.⚖️ 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 what we measure. (a) False (b) True
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
12. 12.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to hide the corks (d) to splash everyone
13. 13.True or false: wet hair drying is condensation. (a) True (b) False
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) yeast
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) cling film (c) water (d) a balloon
16. 16.🧺 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 battery cell (d) a glass of water
17. 17.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a balloon (c) a drinking straw (d) sticky tape
18. 18.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a balloon
20. 20.🧺 Which of these is not needed for the density tower? (a) turmeric powder (b) cooking oil (c) a spoon (d) honey
21. 21.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a ruler (c) a pencil (d) a mirror
22. 22.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
23. 23.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) throw the glass (d) do not lick the spoon
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it can float (d) it dissolves
26. 26.💧 Which change is this: dew on morning grass? (a) freezing (b) melting (c) condensation (d) evaporation
27. 27.🍯 Is air denser or less dense than water? (a) less dense than water (b) denser than water
28. 28.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a magnetic chess set (d) a medicine dropper
29. 29.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) a towel for spills (c) a tub of water (d) small test objects
30. 30.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
31. 31.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
32. 32.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is what we measure. (a) True (b) False
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) the same straw (c) distance it travels
34. 34.🍯 Which of these is denser than water? (a) very salty water (b) a ping-pong ball (c) air (d) a cork
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same card (b) whether the card stays (c) how full the glass is
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a battery cell (d) a towel for spills
37. 37.🧺 Which of these is not needed for the float-or-sink test? (a) turmeric powder (b) a towel for spills (c) a tub of water (d) a results table
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it floats higher (c) it melts (d) it turns blue
40. 40.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a plastic ruler (d) a piece of foil

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