Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 212 · 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 is the odd one out? (a) water becoming ice (b) a pond icing over (c) making ice lollies (d) a misty bathroom mirror
2. 2.🌈 In VIBGYOR, what number colour is indigo?
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the length of the blades (c) the kind of paper
4. 4.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
5. 5.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a rainbow (c) a magnet (d) a crystal
6. 6.🔍 Which is the odd one out? (a) a glass marble (b) a dry leaf (c) a piece of thermocol (d) an ice cube
7. 7.⚖️ 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 same white paper (b) the amount of water (c) brightness of rainbow
8. 8.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) cold water (d) cotton wool
10. 10.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
11. 11.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) it stays still (c) backward (d) straight down
12. 12.🥄 Which of these dissolves faster? (a) a big sugar cube (b) powdered sugar (c) sugar in icy water (d) sugar left unstirred
13. 13.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it speeds up (c) it goes backward first (d) it travels farther
14. 14.⚖️ 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
15. 15.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
16. 16.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
17. 17.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.True or false: air is less dense than water. (a) True (b) False
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a towel (d) turmeric powder
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) the same straw (c) how big we blow it (d) the same string
22. 22.🌈 In VIBGYOR, what number colour is blue?
23. 23.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a fridge magnet (d) a compass needle
24. 24.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it floats higher (c) it melts (d) it turns blue
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a battery cell
26. 26.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
27. 27.True or false: cling film is not needed for the water cycle bowl. (a) True (b) False
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) a drinking straw (d) vinegar
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.True or false: sticky tape is needed for the balloon rocket. (a) False (b) True
31. 31.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a ruler (c) a mirror (d) a battery cell
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the slope of the string (b) distance it travels (c) how big we blow it
35. 35.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) chalk powder (d) sand
36. 36.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) vinegar (c) a long string (d) two chairs
38. 38.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
39. 39.🚁 Which of these falls slowly through the air? (a) a glass marble (b) an open sheet of paper (c) a stone (d) a crumpled paper ball
40. 40.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed

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