Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 22 · 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.🔍 Which is the odd one out? (a) a pebble (b) a metal key (c) an ice cube (d) a steel spoon
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
3. 3.🧺 Which of these is needed for the density tower? (a) a magnet (b) honey (c) a mirror (d) yeast
4. 4.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the water (d) the air above
5. 5.True or false: cling film is not needed for the water cycle bowl. (a) True (b) False
6. 6.🌈 In VIBGYOR, what number colour is orange?
7. 7.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) warm water (d) a comb
9. 9.True or false: a dry leaf sinks in water. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) an open sheet of paper (b) a fluff of cotton (c) a coin (d) a feather
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sheet of white paper
13. 13.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
14. 14.True or false: cling film is needed for the water cycle bowl. (a) False (b) True
15. 15.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
16. 16.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
17. 17.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) faster (c) it stops in the air (d) slower
18. 18.🥄 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) table salt (d) cooking oil
19. 19.🔍 Which is the odd one out? (a) honey (b) very salty water (c) a pebble (d) a ping-pong ball
20. 20.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to smoke (b) it disappears (c) it turns to drops (d) it turns to salt
21. 21.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
22. 22.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
23. 23.🚁 Which of these falls fast through the air? (a) a feather (b) an open sheet of paper (c) a stone (d) a fluff of cotton
24. 24.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the card stays on (d) the water turns to ice
25. 25.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) True (b) False
27. 27.True or false: water from the oars goes forward. (a) True (b) False
28. 28.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) the balloon (d) gas from the rocket
29. 29.True or false: chalk powder dissolves in water. (a) True (b) False
30. 30.🍯 Which of these is less dense than water? (a) a coin (b) a ping-pong ball (c) very salty water (d) honey
31. 31.🛟 Which of these floats on water? (a) a piece of thermocol (b) a pebble (c) a ball of clay (d) a glass marble
32. 32.🛟 Which of these sinks in water? (a) an ice-cream stick (b) an empty capped bottle (c) a steel spoon (d) a cork
33. 33.⚖️ 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 measure it (c) we keep it the same
34. 34.True or false: powdered sugar dissolves slower. (a) True (b) False
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) a battery cell
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of water (c) the stirring (d) the amount of sugar
37. 37.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the water turns green (d) the flower floats away
38. 38.True or false: a pond icing over is condensation. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a puddle drying up (b) water becoming ice (c) making ice lollies (d) a pond icing over
40. 40.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) gardening shears (d) safety scissors

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