Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 534 · 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.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
2. 2.⚖️ 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 kept the same. (a) False (b) True
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a few hours of waiting (d) a white flower
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
7. 7.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the air above (d) the cork itself
8. 8.⚖️ 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 water (b) time for colour to show (c) the length of the stem (d) the kind of flower
9. 9.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a magnet (d) a small rainbow
10. 10.🌈 In VIBGYOR, what number colour is green?
11. 11.⚖️ 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 pouring”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the amount of water (c) time to dissolve (d) the water temperature
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) True (b) False
14. 14.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it turns blue (c) it spins the other way (d) it does not fall
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.True or false: a drinking straw works by air pressure. (a) False (b) True
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) how big we blow it (c) distance it travels
18. 18.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
19. 19.🔍 Which is the odd one out? (a) a pond icing over (b) water becoming ice (c) making ice lollies (d) drops on a cold glass
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) yeast (d) bright sunlight
21. 21.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a rainbow (d) a solution
22. 22.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
23. 23.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
24. 24.🛟 Does a cork float or sink in water? (a) sinks (b) floats
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🚁 What does the paper helicopter do as it falls? (a) it flies upward (b) it turns into a ball (c) it stays still in air (d) it spins round
27. 27.🛟 Does a feather float or sink in water? (a) floats (b) sinks
28. 28.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) the floor pushes it (c) air pushes on its blades (d) it has no weight
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a mirror (d) a sheet of white paper
32. 32.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
33. 33.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
34. 34.⚖️ 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 same three liquids”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) turmeric powder (d) a towel
37. 37.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a ping-pong ball (b) an iron nail (c) a coin (d) a pebble
40. 40.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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