Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 668 · 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.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a big bowl (c) water (d) a battery cell
2. 2.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a balloon rocket (c) a fridge magnet (d) a sundial
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a paper clip (c) a pencil (d) yeast
5. 5.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
6. 6.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) smell it closely (d) look for leftover grains
7. 7.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a medicine dropper (d) a vacuum cleaner
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) vinegar (c) sticky tape (d) a balloon
9. 9.🔍 Which is the odd one out? (a) a coin (b) very salty water (c) cooking oil (d) a pebble
10. 10.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) it changes colour (c) hot water is heavy (d) hot water can scald
12. 12.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) a mirror (c) water (d) sunlight
13. 13.🎈 When does the balloon rocket stop? (a) when it turns blue (b) it never stops (c) when the air runs out (d) when it gets cold
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) water (c) a big bowl (d) a magnet
15. 15.True or false: a drinking straw works by magnetism. (a) True (b) False
16. 16.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it goes backward first (d) it travels farther
17. 17.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
18. 18.🚁 Why does the paper helicopter fall slowly? (a) it has no weight (b) a magnet holds it (c) air pushes on its blades (d) the floor pushes it
19. 19.True or false: an empty capped bottle floats on water. (a) True (b) False
20. 20.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
21. 21.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
22. 22.🛟 Which of these floats on water? (a) a glass marble (b) a steel spoon (c) a metal key (d) a piece of thermocol
23. 23.True or false: a fluff of cotton falls fast through the air. (a) False (b) True
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a white flower (d) a glass of water
26. 26.⚖️ 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 kind of flower (b) time for colour to show (c) the amount of colour (d) the length of the stem
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) food colour (d) a balloon
28. 28.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar left unstirred (c) sugar in warm water (d) powdered sugar
29. 29.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a cotton thread (d) a plastic ruler
30. 30.⚖️ 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 kept the same. (a) True (b) False
31. 31.True or false: sunlight is needed for the water cycle bowl. (a) False (b) True
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) yeast
33. 33.🥄 Which of these dissolves in water? (a) food colour (b) cooking oil (c) small pebbles (d) sand
34. 34.🛟 Which of these floats on water? (a) a steel spoon (b) a pebble (c) a dry leaf (d) a ball of clay
35. 35.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it stops in the air (c) it floats up (d) faster
36. 36.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) warm water (c) a teaspoon (d) a balloon
37. 37.🔍 Which is the odd one out? (a) an ice cube (b) an ice-cream stick (c) a piece of thermocol (d) a glass marble
38. 38.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) turmeric powder (c) a mirror (d) a magnet
39. 39.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a paper towel (d) a glass marble
40. 40.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False

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