Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 566 · 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 a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it changes colour (c) it gets too heavy (d) it turns into a kite
3. 3.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) pour more water (c) leave them wet (d) wipe them dry
4. 4.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
5. 5.True or false: a battery cell is needed for the density tower. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a pebble (b) a glass marble (c) a dry leaf (d) a metal key
7. 7.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
8. 8.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it speeds up (d) it travels less far
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is what we measure. (a) True (b) False
10. 10.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the card flies away (d) the water turns to ice
11. 11.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
12. 12.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
13. 13.💧 Which change is this: a misty bathroom mirror? (a) melting (b) evaporation (c) freezing (d) condensation
14. 14.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
15. 15.🔍 Which is the odd one out? (a) a ping-pong ball (b) an ice cube (c) a ball of clay (d) a cork
16. 16.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
17. 17.🧺 Which of these is not needed for the density tower? (a) a battery cell (b) water with food colour (c) a tall clear glass (d) a spoon
18. 18.🔍 Which is the odd one out? (a) a fluff of cotton (b) an open sheet of paper (c) a crumpled paper ball (d) a toy parachute
19. 19.True or false: snow turning to water is melting. (a) True (b) False
20. 20.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a vacuum cleaner (c) a magnetic pin holder (d) a magnetic chess set
21. 21.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) a glass of water (d) a few hours of waiting
23. 23.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a balloon rocket (c) a fridge magnet (d) a mirror
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a paper clip (c) a ruler (d) a mirror
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) a tall clear glass (c) a spoon (d) water with food colour
26. 26.🌈 In VIBGYOR, what number colour is yellow?
27. 27.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a magnet (d) a tub of water
28. 28.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) faster (c) slower (d) not at all
29. 29.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) less friction (d) no change at all
30. 30.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) the sugar cube (d) both the same
31. 31.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
32. 32.True or false: cooking oil is needed for the density tower. (a) True (b) False
33. 33.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
34. 34.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) an empty capped bottle (b) a glass marble (c) a ball of clay (d) a coin
36. 36.🌈 How many colours do we name in a rainbow (VIBGYOR)?
37. 37.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) warm water (c) a magnet (d) sugar
38. 38.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
39. 39.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
40. 40.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water

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