Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 645 · 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 change is this: a pond icing over? (a) freezing (b) evaporation (c) melting (d) condensation
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
3. 3.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) an ice cube (b) a ball of clay (c) an empty capped bottle (d) a ping-pong ball
5. 5.True or false: a toy parachute falls fast through the air. (a) True (b) False
6. 6.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
7. 7.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
8. 8.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) cooking oil (c) water with food colour (d) a battery cell
9. 9.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
11. 11.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
12. 12.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a rubber eraser (d) a piece of chalk
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a few hours of waiting (d) food colour
14. 14.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) table salt (d) sugar
15. 15.🥄 Which of these does not dissolve in water? (a) table salt (b) sugar (c) small pebbles (d) glucose powder
16. 16.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) blue (d) green
17. 17.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) fewer drops form (c) more drops form (d) the bowl freezes
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the kind of sugar
19. 19.True or false: cooking oil is not needed for the density tower. (a) False (b) True
20. 20.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) rain (b) lightning (c) wind (d) sunshine
21. 21.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) sugar (d) small pebbles
22. 22.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
23. 23.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
24. 24.True or false: a balloon is not needed for the density tower. (a) False (b) True
25. 25.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a glass of water (d) a sink or a bucket
27. 27.True or false: honey is less dense than water. (a) True (b) False
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🚀 Which of these goes backward? (a) gas from the rocket (b) the rowing boat (c) the swimmer (d) the balloon
30. 30.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a magnet (d) a clear glass of water
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a mirror (d) a sink or a bucket
32. 32.True or false: a flower stem does not let water climb. (a) True (b) False
33. 33.True or false: gas from the rocket goes forward. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a misty bathroom mirror (b) butter going runny (c) drops on a cold glass (d) dew on morning grass
35. 35.True or false: a puddle drying up is evaporation. (a) False (b) True
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) a pencil (c) safety scissors (d) a paper clip
38. 38.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) the way we turn it (c) whether the card stays (d) how full the glass is
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we measure it (c) we change it

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