Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 224 · 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.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
2. 2.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) powdered sugar (d) sugar left unstirred
3. 3.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) sugar stirred well
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 same glass”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is what we measure. (a) False (b) True
6. 6.True or false: drops under a pot lid is melting. (a) True (b) False
7. 7.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a towel for spills (d) a results table
9. 9.True or false: a big sugar cube dissolves faster. (a) True (b) False
10. 10.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
11. 11.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
12. 12.⚖️ 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) how full the glass is (b) the way we turn it (c) the same card (d) whether the card stays
13. 13.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a balloon (c) a tall clear glass (d) honey
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same string
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sunny window (d) a sheet of white paper
16. 16.🛟 Does a cork float or sink in water? (a) floats (b) sinks
17. 17.True or false: a magnetic chess set works by air pressure. (a) True (b) False
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🔍 Which is the odd one out? (a) a glass marble (b) a pebble (c) a steel spoon (d) a cork
20. 20.True or false: a magnet is needed for the water cycle bowl. (a) True (b) False
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
22. 22.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) the balloon (d) gas from the rocket
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) vinegar (d) two chairs
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
25. 25.🥄 Which of these dissolves in water? (a) sand (b) chalk powder (c) table salt (d) cooking oil
26. 26.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) ice cubes (c) a small cup (d) a magnet
27. 27.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it bounces up (d) it sinks
28. 28.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) on top of the oil (c) under the honey (d) in the honey layer
29. 29.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
31. 31.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) turmeric powder (d) a magnet
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a magnet (c) small test objects (d) a towel for spills
33. 33.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) safety scissors (d) a paper cutter
34. 34.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
35. 35.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
36. 36.True or false: a glass marble falls slowly through the air. (a) False (b) True
37. 37.True or false: an ice cube is less dense than water. (a) False (b) True
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
39. 39.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
40. 40.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the paper makes colours (d) the water is coloured

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