Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 807 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
2. 2.True or false: a coin is less dense than water. (a) False (b) True
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a small cup (c) yeast (d) water
6. 6.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) yeast (d) turmeric powder
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.True or false: a long string is needed for the balloon rocket. (a) False (b) True
9. 9.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a magnet (c) two clear glasses (d) a balloon
10. 10.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) it turns to salt (c) the water increases (d) it turns to ice
11. 11.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it floats (c) it bounces up (d) it dissolves
12. 12.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) pour it on the floor (c) do not lick the spoon (d) taste each layer
13. 13.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) pour more water (c) slide on them (d) wipe them dry
14. 14.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) put string round a neck (d) blow it till it bursts
15. 15.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
16. 16.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
17. 17.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) safety scissors (d) a paper cutter
18. 18.🔮 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) the crumpled ball (d) neither of them
19. 19.True or false: baking soda dissolves in water. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) an ice cube (b) a dry leaf (c) a glass marble (d) a piece of thermocol
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) False (b) True
22. 22.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) safety scissors (c) a strip of paper (d) a paper clip
23. 23.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water can scald (d) hot water is magnetic
24. 24.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a fridge magnet
25. 25.🚁 Which of these falls slowly through the air? (a) an open sheet of paper (b) a coin (c) a stone (d) a steel spoon
26. 26.True or false: a puddle drying up is evaporation. (a) False (b) True
27. 27.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a flower stem (d) a piece of foil
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the order of pouring (c) the same glass
29. 29.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
30. 30.💧 Which change is this: butter going runny? (a) melting (b) evaporation (c) freezing (d) condensation
31. 31.True or false: cooking oil does not dissolve in water. (a) False (b) True
32. 32.⚖️ 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) the same glass (c) how full the glass is
33. 33.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) under the honey (c) in the water layer (d) on top of the oil
34. 34.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a plastic ruler (d) a steel spoon
36. 36.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) turmeric powder
38. 38.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
40. 40.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) yeast (d) small test objects

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