Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 205 · 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.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) False (b) True
3. 3.True or false: a flower stem does not let water climb. (a) False (b) True
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) False (b) True
5. 5.⚖️ 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
6. 6.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
7. 7.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
8. 8.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “how much of each liquid”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it can pop loudly (d) it gets too heavy
11. 11.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a suction hook
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) water with food colour (c) a spoon (d) a battery cell
13. 13.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) the same (d) not at all
14. 14.True or false: sugar in warm water dissolves slower. (a) True (b) False
15. 15.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
16. 16.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) turmeric powder (d) bright sunlight
17. 17.True or false: cooking oil is not needed for the density tower. (a) True (b) False
18. 18.True or false: a balloon is needed for the density tower. (a) False (b) True
19. 19.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
20. 20.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) safety scissors (d) a battery cell
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a mirror (d) a towel
22. 22.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the small pebble (d) the big log
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a balloon
24. 24.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) a mirror (d) a towel for spills
25. 25.True or false: a pond icing over is freezing. (a) True (b) False
26. 26.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
27. 27.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
28. 28.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the tub of water (c) the shape of the clay (d) the kind of clay
30. 30.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it travels farther (d) it speeds up
31. 31.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
32. 32.🛟 Which of these floats on water? (a) a metal key (b) a feather (c) a steel spoon (d) a coin
33. 33.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) a big sugar cube
34. 34.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
35. 35.🧺 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) yeast (d) a results table
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
37. 37.🌈 How many colours do we name in a rainbow (VIBGYOR)?
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.🧺 Do we need turmeric powder for the paper helicopter? (a) not needed (b) needed
40. 40.True or false: a results table is needed for the float-or-sink test. (a) True (b) False

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