Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 823 · 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.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water can scald (c) hot water is heavy (d) it changes colour
2. 2.🔍 Which is the odd one out? (a) a glass marble (b) a coin (c) a metal key (d) an ice cube
3. 3.💧 Which of these does not let water climb? (a) a plastic ruler (b) a strip of cloth (c) a sugar cube (d) a paper towel
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the amount of colour (c) time for colour to show
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.True or false: a ball of clay floats on water. (a) True (b) False
7. 7.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) pour more water (c) wipe them dry (d) leave them wet
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the way we turn it
9. 9.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a drinking straw (c) a mirror (d) a balloon
10. 10.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) turmeric powder (c) a tall clear glass (d) a spoon
11. 11.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) water is hiding there (d) the bottle is magnetic
13. 13.True or false: small pebbles dissolves in water. (a) True (b) False
14. 14.🍯 Which of these is denser than water? (a) honey (b) air (c) a ping-pong ball (d) cooking oil
15. 15.True or false: a mirror is not needed for the density tower. (a) True (b) False
16. 16.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🍯 Which of these is denser than water? (a) a cork (b) cooking oil (c) a glass marble (d) an ice cube
18. 18.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) water becoming ice (b) making ice lollies (c) drops under a pot lid (d) a pond icing over
20. 20.⚖️ 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
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the drop height (b) time to reach the floor (c) the length of the blades (d) the paper clip
22. 22.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
23. 23.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic pin holder (c) a drinking straw (d) a suction hook
24. 24.🛟 Which of these floats on water? (a) a glass marble (b) a piece of thermocol (c) a pebble (d) a metal key
25. 25.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) powdered sugar (d) sugar in icy water
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) True (b) False
27. 27.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) sugar in warm water (d) a big sugar cube
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) reflection (d) magnetism
30. 30.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) water (c) a magnet (d) sunlight
31. 31.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
32. 32.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a magnetic chess set (d) a drinking straw
33. 33.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) water from the oars (d) the rowing boat
34. 34.True or false: a balloon is not needed for the paper helicopter. (a) True (b) False
35. 35.True or false: a spoon is not needed for the density tower. (a) True (b) False
36. 36.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
37. 37.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a ruler (c) a paper clip (d) turmeric powder
38. 38.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a mirror (c) a spoon (d) water with food colour
40. 40.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) turmeric powder (c) yeast (d) a balloon

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