Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 353 · 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 is the odd one out? (a) an ice cube (b) a feather (c) a cork (d) a metal key
2. 2.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
4. 4.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) pour more water (c) slide on them (d) wipe them dry
5. 5.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) powdered sugar (d) a big sugar cube
6. 6.True or false: the rowing boat goes backward. (a) True (b) False
7. 7.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a fridge magnet (d) a vacuum cleaner
9. 9.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a magnet (d) a solution
10. 10.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a cotton thread (d) a sugar cube
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a mirror (d) a results table
12. 12.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) neither of them (d) the big log
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a stiff postcard (d) a sink or a bucket
16. 16.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) cold water (c) a teaspoon (d) two clear glasses
18. 18.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a balloon (d) a towel for spills
19. 19.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) sunlight (c) a small cup (d) cling film
20. 20.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it floats up (c) it settles at the bottom (d) it turns blue
21. 21.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
23. 23.True or false: table salt does not dissolve in water. (a) False (b) True
24. 24.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) sea water is warm (c) it has a magnet (d) steel is very light
25. 25.True or false: sand dissolves in water. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) honey (b) a pebble (c) a glass marble (d) a ping-pong ball
27. 27.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to cool the glass (d) to grow plants
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) food colour (d) a white flower
33. 33.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a suction hook (c) a fridge magnet (d) a magnetic pin holder
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) yeast
35. 35.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
36. 36.🥄 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sawdust (d) table salt
37. 37.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors
38. 38.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) throw the glass (d) pour it on the floor
39. 39.🔍 Which is the odd one out? (a) honey (b) a cork (c) an ice cube (d) cooking oil
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) True (b) False

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