Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 310 · 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.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
3. 3.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
4. 4.🧺 Which of these is not needed for the water cycle bowl? (a) yeast (b) a big bowl (c) a small cup (d) cling film
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.⚖️ 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 order of the layers (b) how much of each liquid (c) the same glass (d) the order of pouring
7. 7.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
8. 8.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
9. 9.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
10. 10.True or false: warm water is needed for the dissolving test. (a) False (b) True
11. 11.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) ice cubes (c) cling film (d) a balloon
12. 12.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
13. 13.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) throw the glass (c) do not lick the spoon (d) taste each layer
14. 14.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
15. 15.💧 Which of these is evaporation? (a) drops on a cold glass (b) a pond icing over (c) water becoming ice (d) wet clothes drying
16. 16.🧺 Which of these is needed for the density tower? (a) a magnet (b) a balloon (c) a tall clear glass (d) a mirror
17. 17.📘 What pulls the paper helicopter down to the floor? (a) magnetism (b) gravity (c) the wind (d) air pressure
18. 18.⚖️ 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 time of day (b) brightness of rainbow (c) the amount of water
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) whether the card stays (b) the same card (c) how full the glass is (d) the same glass
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a white flower (d) a few hours of waiting
21. 21.🧺 Do we need a balloon for the paper helicopter? (a) needed (b) not needed
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
23. 23.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) vinegar (c) two chairs (d) turmeric powder
24. 24.🔍 Which is the odd one out? (a) a paper helicopter (b) a toy parachute (c) a steel spoon (d) a feather
25. 25.True or false: sugar is not needed for the dissolving test. (a) True (b) False
26. 26.True or false: a bicycle pump works by magnetism. (a) True (b) False
27. 27.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a glass marble (d) a steel spoon
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) vinegar (c) a drinking straw (d) sticky tape
29. 29.True or false: the rowing boat goes backward. (a) False (b) True
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) yeast
31. 31.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
32. 32.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a ruler (c) a pencil (d) a battery cell
33. 33.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
34. 34.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
36. 36.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) bubbles of gas (c) the glass gets hot (d) three separate layers
37. 37.⚖️ 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) False (b) True
38. 38.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
39. 39.True or false: dew on morning grass is evaporation. (a) True (b) False
40. 40.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed

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