Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 633 · 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.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.💧 Which of these is freezing? (a) snow turning to water (b) making ice lollies (c) butter going runny (d) drops under a pot lid
3. 3.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
4. 4.🔍 Which is the odd one out? (a) a feather (b) a ball of clay (c) a coin (d) a metal key
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) turmeric powder (d) a magnet
6. 6.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) turmeric powder (d) a drinking straw
8. 8.⚖️ 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) the same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
9. 9.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a tub of water (c) a results table (d) a towel for spills
12. 12.True or false: a ruler is not needed for the paper helicopter. (a) False (b) True
13. 13.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a ruler (c) safety scissors (d) turmeric powder
14. 14.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the drop height (b) the paper clip (c) the person dropping (d) time to reach the floor
16. 16.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
17. 17.📘 What pulls the paper helicopter down to the floor? (a) air pressure (b) magnetism (c) the wind (d) gravity
18. 18.True or false: a comb is needed for the dissolving test. (a) False (b) True
19. 19.🚀 Which of these goes backward? (a) the rowing boat (b) the balloon (c) water a swimmer pushes (d) the rocket
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) sunlight (c) cling film (d) a mirror
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.⚖️ 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 change it (b) we measure it (c) we keep it the same
25. 25.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) a paper cutter (c) gardening shears (d) sharp kitchen shears
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) False (b) True
27. 27.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a mirror (c) a strip of paper (d) a pencil
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the water temperature (c) time to dissolve (d) the kind of sugar
30. 30.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the amount of clay
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the amount of water
34. 34.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the tub of water
37. 37.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) do not lick the spoon (c) throw the glass (d) taste each layer
38. 38.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) keep them in your mouth (d) throw them away safely
39. 39.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
40. 40.🍯 Which of these is less dense than water? (a) a pebble (b) honey (c) a coin (d) cooking oil

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