Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 956 · 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.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) smell it closely (d) taste it
2. 2.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
3. 3.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) safety scissors (c) a battery cell (d) a strip of paper
4. 4.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to keep children safe (d) to win a prize
5. 5.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a towel for spills (d) a magnet
7. 7.💧 Which of these does not let water climb? (a) a sugar cube (b) a plastic ruler (c) a cotton thread (d) a paper towel
8. 8.🌈 In VIBGYOR, what number colour is violet?
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
10. 10.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it settles at the bottom (c) it turns blue (d) it floats up
11. 11.True or false: warm water is not needed for the dissolving test. (a) True (b) False
12. 12.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) turmeric powder (c) water (d) a big bowl
13. 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) warm water (c) sugar (d) a mirror
14. 14.⚖️ 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 keep it the same (b) we change it (c) we measure it
15. 15.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
16. 16.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🔮 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) the crumpled ball (d) a sheet of glass
18. 18.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
19. 19.True or false: an ice-cream stick floats on water. (a) True (b) False
20. 20.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
21. 21.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) sugar in warm water
22. 22.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
23. 23.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) air from the balloon (d) the rowing boat
24. 24.True or false: wet hair drying is evaporation. (a) False (b) True
25. 25.True or false: the rocket goes backward. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a flower stem (d) a strip of cloth
27. 27.⚖️ 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) the same glass (b) how full the glass is (c) whether the card stays
28. 28.💧 Which of these is evaporation? (a) ice becoming water (b) butter going runny (c) a misty bathroom mirror (d) wet hair drying
29. 29.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
30. 30.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) water warmed by the Sun (c) the bowl itself (d) the air outside
31. 31.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the water turns to ice (d) the card stays on
32. 32.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a ruler (c) a strip of paper (d) turmeric powder
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the time of day (b) the same white paper (c) brightness of rainbow (d) the amount of water
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) a balloon
35. 35.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it can float (c) it sinks faster (d) it turns to stone
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) a results table (d) a mirror
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a balloon (d) a glass of water
38. 38.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
39. 39.🔍 Which is the odd one out? (a) a pond icing over (b) water becoming ice (c) dew on morning grass (d) making ice lollies
40. 40.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green

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