Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 630 · 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 paper helicopter? (a) a magnet (b) a mirror (c) a ruler (d) a balloon
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) False (b) True
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a magnet (d) food colour
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) cling film (c) a big bowl (d) a small cup
5. 5.🔍 Which is the odd one out? (a) a coin (b) a piece of thermocol (c) a ping-pong ball (d) an ice cube
6. 6.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
7. 7.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
9. 9.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) sticky tape (c) a battery cell (d) turmeric powder
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same glass (b) the amount of water (c) brightness of rainbow
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the amount of water (b) the size of the bowl (c) how many drops form (d) sun or shade
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
16. 16.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
17. 17.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
18. 18.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
19. 19.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) the cold water (d) air pushing up
20. 20.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
21. 21.True or false: a flower stem does not let water climb. (a) True (b) False
22. 22.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) whether the card stays (b) how full the glass is (c) the same card (d) the same glass
24. 24.True or false: a misty bathroom mirror is condensation. (a) False (b) True
25. 25.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
27. 27.🌈 In VIBGYOR, what number colour is orange?
28. 28.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it became air (c) it vanished for ever (d) it sank as sand
29. 29.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a magnet (c) a mirror (d) cling film
30. 30.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
31. 31.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
32. 32.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) gardening shears (c) sharp kitchen shears (d) a paper cutter
33. 33.🔍 Which is the odd one out? (a) butter going runny (b) ice becoming water (c) snow turning to water (d) water becoming ice
34. 34.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a balloon rocket (d) a fridge magnet
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) bright sunlight (d) a clear glass of water
36. 36.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) turmeric powder (c) a mirror (d) safety scissors
37. 37.🚢 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
38. 38.🧺 Which of these is needed for the density tower? (a) yeast (b) turmeric powder (c) a spoon (d) a magnet
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
40. 40.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is what we measure. (a) True (b) False

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