Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 168 · 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.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) False (b) True
2. 2.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) a shadow of ice (d) snow falling
3. 3.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
4. 4.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a sugar cube (d) a paper towel
5. 5.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a stone (c) a glass marble (d) a feather
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a towel for spills (c) a tub of water (d) small test objects
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🧺 Do we need a mirror for the paper helicopter? (a) not needed (b) needed
9. 9.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
10. 10.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a towel for spills (c) a magnet (d) a battery cell
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a balloon (c) a spoon (d) honey
12. 12.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
13. 13.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a magnet (c) yeast (d) sticky tape
14. 14.🥄 Which of these dissolves faster? (a) sugar stirred well (b) a big sugar cube (c) sugar in icy water (d) sugar left unstirred
15. 15.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
16. 16.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) chew them (c) give them to a baby (d) throw them away safely
17. 17.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a magnet (c) a paper clip (d) a mirror
18. 18.📘 What is water vapour? (a) a kind of smoke (b) tiny ice cubes (c) water as a gas (d) salty water
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) cooking oil (d) a battery cell
20. 20.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar in icy water (d) sugar stirred well
21. 21.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a mirror (d) a towel
23. 23.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) a magnet (d) a tub of 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 measure it (b) we keep it the same (c) we change it
25. 25.⚖️ 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
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) yeast (d) turmeric powder
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
28. 28.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a battery cell
30. 30.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to hide the corks (d) to keep children safe
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) food colour
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a pencil (c) a strip of paper (d) a magnet
34. 34.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the length of the stem (b) the room it stands in (c) the amount of colour (d) the kind of flower
36. 36.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a strip of paper (c) a magnet (d) a ruler
37. 37.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a battery cell (c) a long string (d) a drinking straw
39. 39.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a balloon (c) small test objects (d) a magnet
40. 40.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so it turns blue (d) so the Sun moves

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