Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 16 · 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 of these is needed for the density tower? (a) a balloon (b) a spoon (c) turmeric powder (d) a battery cell
2. 2.💧 Which change is this: wet clothes drying? (a) evaporation (b) melting (c) freezing (d) condensation
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.📘 What is the push of air on a falling thing called? (a) floating (b) air resistance (c) magnetism (d) dissolving
5. 5.🔍 Which is the odd one out? (a) air (b) honey (c) cooking oil (d) a cork
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the paper clip (b) the kind of paper (c) time to reach the floor (d) the person dropping
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) a few hours of waiting (d) a glass of water
8. 8.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) play near a deep pond (d) leave water on the floor
10. 10.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
11. 11.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) green (d) violet
12. 12.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) throw them away safely (d) give them to a baby
13. 13.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
14. 14.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
15. 15.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a battery cell (c) sticky tape (d) a long string
16. 16.True or false: a sugar cube lets water climb up it. (a) False (b) True
17. 17.🧺 Do we need cling film for the water cycle bowl? (a) not needed (b) needed
18. 18.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) the water increases (c) it turns to salt (d) it turns to ice
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the amount of clay (c) the shape of the clay (d) the kind of clay
20. 20.True or false: an ice cube sinks in water. (a) True (b) False
21. 21.True or false: snow turning to water is melting. (a) True (b) False
22. 22.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the air above (d) the water
23. 23.True or false: a mirror is not needed for the density tower. (a) True (b) False
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
25. 25.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
26. 26.⚖️ 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) False (b) True
27. 27.True or false: a cork sinks in water. (a) False (b) True
28. 28.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to win a prize (d) to hide the corks
29. 29.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it does not fall (d) so it turns blue
30. 30.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the balloon (d) water from the oars
32. 32.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) neither of them (c) a sheet of glass (d) the crumpled ball
33. 33.⚖️ 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
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) True (b) False
35. 35.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) its hollow shape (c) it has a magnet (d) steel is very light
36. 36.🛟 Which of these sinks in water? (a) a glass marble (b) a ping-pong ball (c) an ice cube (d) an empty capped bottle
37. 37.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a battery cell (c) yeast (d) small test objects
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
39. 39.True or false: a magnet is needed for the water rainbow. (a) False (b) True
40. 40.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a magnet (c) a mirror (d) a balloon

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