Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 281 · 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.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the amount of sugar
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a battery cell (c) small test objects (d) a tub of water
3. 3.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a mirror (c) cooking oil (d) a tall clear glass
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) turmeric powder (d) small test objects
5. 5.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is the one thing we change. (a) True (b) False
6. 6.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls slowly (b) falls fast
7. 7.🔍 Which is the odd one out? (a) dew on morning grass (b) drops on a cold glass (c) a misty bathroom mirror (d) snow turning to water
8. 8.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) turmeric powder (c) a drinking straw (d) two chairs
9. 9.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a balloon (c) a battery cell (d) small test objects
10. 10.True or false: a stone falls slowly through the air. (a) False (b) True
11. 11.True or false: a paper helicopter falls fast through the air. (a) False (b) True
12. 12.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it changes colour (d) it turns into a kite
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a sink or a bucket (d) a stiff postcard
14. 14.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) water with food colour (c) honey (d) cooking oil
15. 15.🧺 Which of these is needed for the water rainbow? (a) yeast (b) turmeric powder (c) a clear glass of water (d) a magnet
16. 16.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is magnetic (c) it changes colour (d) hot water is heavy
17. 17.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
18. 18.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) food colour (d) glucose powder
19. 19.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
20. 20.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) a mirror (d) cold water
21. 21.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a mirror (c) a tall clear glass (d) turmeric powder
22. 22.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
23. 23.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is what we measure. (a) False (b) True
26. 26.🧺 Which of these is not needed for the density tower? (a) turmeric powder (b) honey (c) a tall clear glass (d) a spoon
27. 27.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a tub of water (c) a towel for spills (d) small test objects
30. 30.📘 What does “dense” mean? (a) very colourful (b) very hot (c) heavy for its size (d) very thin
31. 31.🔮 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
32. 32.True or false: a cork floats on water. (a) True (b) False
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) distance it travels (c) the slope of the string (d) the same straw
34. 34.🧺 Do we need turmeric powder for the paper helicopter? (a) not needed (b) needed
35. 35.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
36. 36.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they become solid (c) they mix for ever (d) they turn to honey
37. 37.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
38. 38.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) forward (c) backward (d) straight down
39. 39.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
40. 40.True or false: water with food colour is needed for the density tower. (a) True (b) False

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