Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 273 · 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.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) the room it stands in (c) time for colour to show (d) the kind of flower
4. 4.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a cork (c) a pebble (d) an empty capped bottle
5. 5.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a ping-pong ball (c) a glass marble (d) a cork
6. 6.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the water turns solid (c) the sugar turns to salt (d) all of it dissolves
9. 9.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) look for leftover grains (d) smell it closely
10. 10.🔍 Which is the odd one out? (a) a fluff of cotton (b) a toy parachute (c) a paper helicopter (d) a coin
11. 11.True or false: sugar dissolves in water. (a) True (b) False
12. 12.True or false: sugar is needed for the dissolving test. (a) False (b) True
13. 13.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) False (b) True
15. 15.True or false: cold water is needed for the dissolving test. (a) False (b) True
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
17. 17.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a cork (c) a glass marble (d) cooking oil
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) False (b) True
19. 19.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) no change at all (c) it goes faster (d) more friction, less far
20. 20.True or false: cooking oil is less dense than water. (a) False (b) True
21. 21.🚀 Which of these goes backward? (a) the swimmer (b) the rocket (c) air from the balloon (d) the balloon
22. 22.⚖️ 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
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
25. 25.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
26. 26.True or false: a misty bathroom mirror is condensation. (a) False (b) True
27. 27.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a balloon (d) a sheet of white paper
29. 29.🚁 Which of these falls fast through the air? (a) a feather (b) an open sheet of paper (c) a paper helicopter (d) a crumpled paper ball
30. 30.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) the crumpled ball (c) the flat sheet (d) a sheet of glass
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a battery cell
32. 32.💧 Which change is this: a pond icing over? (a) evaporation (b) freezing (c) condensation (d) melting
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a towel for spills (c) small test objects (d) a tub of water
34. 34.🧺 Do we need honey for the density tower? (a) not needed (b) needed
35. 35.True or false: a big bowl is needed for the water cycle bowl. (a) False (b) True
36. 36.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
37. 37.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
38. 38.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) slower (c) faster (d) they turn to ice
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same glass
40. 40.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed

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