Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 422 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) food colour (d) sand
3. 3.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) a toy parachute (b) a paper helicopter (c) a coin (d) a fluff of cotton
7. 7.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) blow it till it bursts (c) put string round a neck (d) keep it away from faces
8. 8.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
9. 9.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) the cap is sticky (d) air inside pushes back
10. 10.💧 Which of these is evaporation? (a) a misty bathroom mirror (b) drops on a cold glass (c) a pond icing over (d) wet hair drying
11. 11.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
12. 12.⚖️ 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) True (b) False
13. 13.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) throw them away safely (d) keep them in your mouth
14. 14.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a rubber eraser (d) a sugar cube
15. 15.⚖️ 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 same three liquids (b) the order of pouring (c) the order of the layers
16. 16.True or false: a ruler is needed for the paper helicopter. (a) False (b) True
17. 17.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) safety scissors (d) gardening shears
21. 21.True or false: a glass marble lets water climb up it. (a) True (b) False
22. 22.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a paper clip (c) a pencil (d) safety scissors
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) True (b) False
24. 24.True or false: a coin is less dense than water. (a) False (b) True
25. 25.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a results table (c) a tub of water (d) small test objects
26. 26.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) bright sunlight (c) yeast (d) turmeric powder
28. 28.🌈 In VIBGYOR, what number colour is yellow?
29. 29.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water is magnetic (c) hot water can scald (d) it changes colour
30. 30.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) cold water (c) warm water (d) a clock or timer
32. 32.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a steel spoon (d) a strip of cloth
33. 33.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) a battery cell (c) sunlight (d) turmeric powder
35. 35.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) butter going runny (b) snow turning to water (c) making ice lollies (d) ice becoming water
37. 37.True or false: a metal key floats on water. (a) False (b) True
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sunny window (c) a sheet of white paper (d) bright sunlight
40. 40.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) neither of them (d) powdered sugar

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