Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 101 · 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.True or false: the rocket goes backward. (a) True (b) False
2. 2.True or false: a magnetic chess set works by magnetism. (a) False (b) True
3. 3.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is less dense (c) ice is very cold (d) water is sticky
4. 4.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) keep them in your mouth (c) chew them (d) give them to a baby
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) cooking oil (c) an ice cube (d) air
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the same three liquids (c) the order of pouring
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a balloon (d) bright sunlight
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the same straw (c) how big we blow it (d) the same tape
10. 10.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a battery cell (c) cling film (d) ice cubes
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
12. 12.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
13. 13.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
14. 14.🔍 Which is the odd one out? (a) cooking oil (b) very salty water (c) a coin (d) a glass marble
15. 15.🔍 Which is the odd one out? (a) a pebble (b) a glass marble (c) a cork (d) very salty water
16. 16.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) a balloon (d) two chairs
19. 19.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) green (c) violet (d) blue
20. 20.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.💧 In the covered bowl, where does the water vapour come from? (a) the air outside (b) the cling film (c) water warmed by the Sun (d) the bowl itself
22. 22.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a balloon (c) a results table (d) turmeric powder
23. 23.True or false: the rowing boat goes forward. (a) False (b) True
24. 24.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) smell it closely (d) poke it with a finger
25. 25.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the density tower? (a) a spoon (b) a tall clear glass (c) a magnet (d) water with food colour
27. 27.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a glass of water (d) yeast
29. 29.🔍 Which is the odd one out? (a) making ice lollies (b) snow turning to water (c) ice becoming water (d) butter going runny
30. 30.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a towel for spills (d) a tub of water
32. 32.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.True or false: air from the balloon goes backward. (a) False (b) True
35. 35.⚖️ 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 the one thing we change. (a) False (b) True
36. 36.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
38. 38.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) the same (d) not at all
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) the time we wait (c) sun or shade
40. 40.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) honey (c) cooking oil (d) the spoon

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