Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 497 · 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 is not needed for the water cycle bowl? (a) a small cup (b) cling film (c) a big bowl (d) turmeric powder
2. 2.⚖️ 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 the one thing we change. (a) True (b) False
3. 3.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
6. 6.🚀 Which of these goes backward? (a) air from the balloon (b) the rowing boat (c) the swimmer (d) the rocket
7. 7.True or false: yeast is not needed for the paper helicopter. (a) False (b) True
8. 8.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a fluff of cotton (c) a crumpled paper ball (d) a stone
9. 9.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it dissolves (c) it turns white (d) it still floats
10. 10.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
11. 11.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a cotton thread (d) a plastic ruler
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
13. 13.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the way we turn it (b) the same glass (c) whether the card stays (d) how full the glass is
15. 15.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) water with food colour (c) a magnet (d) a spoon
16. 16.🧺 Which of these is needed for the density tower? (a) a spoon (b) a battery cell (c) yeast (d) a magnet
17. 17.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) at the very bottom (c) in the oil layer (d) on top of the oil
18. 18.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a small cup (c) a battery cell (d) ice cubes
19. 19.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
20. 20.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
21. 21.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water is heavy (c) it changes colour (d) hot water can scald
22. 22.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the amount of colour
24. 24.True or false: a magnet is needed for the water rainbow. (a) False (b) True
25. 25.True or false: a mirror is needed for the density tower. (a) True (b) False
26. 26.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
27. 27.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
28. 28.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) yeast (c) water with food colour (d) honey
30. 30.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
31. 31.💧 Which of these is condensation? (a) making ice lollies (b) drops under a pot lid (c) wet clothes drying (d) butter going runny
32. 32.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🔍 Which is the odd one out? (a) a metal key (b) a pebble (c) a glass marble (d) a ping-pong ball
34. 34.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) bright sunlight (d) a sheet of white paper
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🔍 Which is the odd one out? (a) wet hair drying (b) a pond icing over (c) a puddle drying up (d) wet clothes drying
38. 38.True or false: cold water is needed for the dissolving test. (a) False (b) True
39. 39.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it

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