Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 144 · 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 of these is needed for the dissolving test? (a) sugar (b) a magnet (c) cotton wool (d) a balloon
2. 2.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a big bowl (c) sunlight (d) turmeric powder
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) a balloon (d) small test objects
5. 5.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) a battery cell (c) a big bowl (d) a balloon
6. 6.🔍 Which is the odd one out? (a) an open sheet of paper (b) a paper helicopter (c) a fluff of cotton (d) a glass marble
7. 7.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a clear glass of water (c) a balloon (d) a magnet
8. 8.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) wipe them dry (c) slide on them (d) leave them wet
9. 9.🥄 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) small pebbles (d) sugar
10. 10.💧 Which of these is evaporation? (a) wet clothes drying (b) drops under a pot lid (c) water becoming ice (d) drops on a cold glass
11. 11.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
12. 12.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
13. 13.True or false: a big sugar cube dissolves faster. (a) False (b) True
14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a clock or timer (c) warm water (d) a magnet
15. 15.⚖️ 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) the same window (c) brightness of rainbow
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a towel (d) a sink or a bucket
17. 17.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
19. 19.🧺 Which of these is not needed for the paper helicopter? (a) a mirror (b) safety scissors (c) a strip of paper (d) a paper clip
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) turmeric powder (d) food colour
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is kept the same. (a) False (b) True
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
23. 23.🫗 Why does cooking oil float on top of water? (a) oil is less dense (b) oil is heavier (c) oil is sticky (d) oil is hot
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) food colour (d) a glass of water
25. 25.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) turmeric powder (c) a balloon (d) yeast
30. 30.True or false: butter going runny is evaporation. (a) True (b) False
31. 31.🌈 In VIBGYOR, what number colour is green?
32. 32.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) warm water is thicker (c) particles move faster (d) sugar likes the dark
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the size of the bowl (b) sun or shade (c) the time we wait (d) the amount of water
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the order of the layers (c) the same three liquids (d) the same glass
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is what we measure. (a) True (b) False
36. 36.True or false: a balloon is needed for the balloon rocket. (a) True (b) False
37. 37.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) water (c) ice cubes (d) cling film
38. 38.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a magnet (c) a battery cell (d) a results table
39. 39.⚖️ 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 measure it (c) we keep it the same
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a towel (c) a battery cell (d) a stiff postcard

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids