Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 675 · 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.True or false: powdered sugar dissolves slower. (a) True (b) False
2. 2.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
3. 3.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the stickiest (c) it is the densest (d) it is yellow
4. 4.True or false: safety scissors is needed for the paper helicopter. (a) False (b) True
5. 5.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a balloon (c) a results table (d) small test objects
7. 7.🥄 Which of these does not dissolve in water? (a) cooking oil (b) table salt (c) sugar (d) baking soda
8. 8.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) sea water is warm (c) steel is very light (d) it has a magnet
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
12. 12.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) evaporation (d) refraction
13. 13.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) the swimmer (d) water from the oars
14. 14.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cold water (c) warm water (d) a mirror
16. 16.🧺 Which of these is needed for the density tower? (a) water with food colour (b) a mirror (c) a magnet (d) a balloon
17. 17.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.True or false: a coin sinks in water. (a) False (b) True
20. 20.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
21. 21.🔍 Which is the odd one out? (a) ice becoming water (b) butter going runny (c) water becoming ice (d) snow turning to water
22. 22.True or false: air is denser than water. (a) False (b) True
23. 23.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
24. 24.🥄 Which of these dissolves in water? (a) sawdust (b) table salt (c) sand (d) cooking oil
25. 25.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the slope of the string (c) how big we blow it (d) distance it travels
27. 27.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a battery cell (c) honey (d) a spoon
28. 28.🧺 Which of these is needed for the water cycle bowl? (a) water (b) a magnet (c) a balloon (d) turmeric powder
29. 29.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil makes it rain (d) oil turns into honey
30. 30.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
31. 31.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
33. 33.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
34. 34.💧 Which of these is condensation? (a) drops on a cold glass (b) wet hair drying (c) water becoming ice (d) wet clothes drying
35. 35.🔍 Which is the odd one out? (a) a cork (b) a coin (c) a glass marble (d) very salty water
36. 36.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a comb (c) cold water (d) a teaspoon
37. 37.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
38. 38.🧺 Which of these is not needed for the density tower? (a) yeast (b) water with food colour (c) cooking oil (d) a spoon
39. 39.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
40. 40.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed

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