Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 929 · 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.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a magnet (c) a pencil (d) a paper clip
2. 2.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) its hollow shape (c) steel is very light (d) it has a magnet
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
4. 4.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) more drops form (c) the bowl freezes (d) the water turns red
5. 5.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) warm water (c) sugar (d) honey
6. 6.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) air from the balloon (d) the balloon
7. 7.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
10. 10.🔍 Which is the odd one out? (a) a fluff of cotton (b) a toy parachute (c) an open sheet of paper (d) a crumpled paper ball
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) yeast
12. 12.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) yeast (c) a towel for spills (d) turmeric powder
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is the one thing we change. (a) True (b) False
15. 15.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a glass of water (d) a towel
17. 17.🛟 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
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the person dropping (b) the paper clip (c) the length of the blades (d) time to reach the floor
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) False (b) True
20. 20.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) on top of the oil (d) under the honey
21. 21.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
22. 22.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
23. 23.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
24. 24.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the flat sheet (c) neither of them (d) the crumpled ball
25. 25.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
26. 26.True or false: a steel spoon falls slowly through the air. (a) True (b) False
27. 27.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) run around the tub (d) wipe up spills at once
28. 28.True or false: a glass marble floats on water. (a) True (b) False
29. 29.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) sugar left unstirred
31. 31.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a medicine dropper (d) a compass needle
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) dew on morning grass (b) snow turning to water (c) a misty bathroom mirror (d) drops under a pot lid
37. 37.⚖️ 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
38. 38.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) pour it on the floor (d) throw the glass
39. 39.True or false: butter going runny is melting. (a) True (b) False
40. 40.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids