Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 579 · 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: a sheet of white paper is needed for the water rainbow. (a) False (b) True
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is the one thing we change. (a) True (b) False
3. 3.True or false: a fridge magnet works by air pressure. (a) True (b) False
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) how much of each liquid (c) the same glass (d) the order of the layers
6. 6.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
7. 7.🧺 Do we need a magnet for the water cycle bowl? (a) not needed (b) needed
8. 8.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
9. 9.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) do not lick the spoon (d) pour it on the floor
11. 11.🔍 Which is the odd one out? (a) a pebble (b) honey (c) a coin (d) cooking oil
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) red (d) orange
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
17. 17.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
18. 18.True or false: yeast is needed for the water rainbow. (a) True (b) False
19. 19.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it floats (d) it bounces up
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) yeast (c) two chairs (d) a long string
21. 21.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the flat sheet (c) neither of them (d) the crumpled ball
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
23. 23.🧺 Which of these is needed for the dissolving test? (a) sugar (b) a balloon (c) a magnet (d) a mirror
24. 24.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it goes less far (c) it flies off the string (d) it turns into a kite
25. 25.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
26. 26.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) a cork (d) air
27. 27.🔮 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 sugar turns to salt (c) some stays undissolved (d) the water turns solid
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) turmeric powder (d) a towel
29. 29.True or false: a pencil is not needed for the paper helicopter. (a) False (b) True
30. 30.🍯 Which of these is denser than water? (a) air (b) a pebble (c) a cork (d) an ice cube
31. 31.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
32. 32.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) turmeric powder (c) a battery cell (d) cling film
34. 34.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
36. 36.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a crumpled paper ball (c) a coin (d) a fluff of cotton
37. 37.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it settles at the bottom (c) it floats up (d) it turns blue
38. 38.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a flower stem (d) a plastic ruler
39. 39.⚖️ 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) how full the glass is (b) whether the card stays (c) the same glass
40. 40.True or false: a mirror is not needed for the water rainbow. (a) False (b) True

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