Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 370 · 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 battery cell (b) turmeric powder (c) a balloon (d) a paper clip
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) False (b) True
3. 3.True or false: a drinking straw works by magnetism. (a) False (b) True
4. 4.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) it stays still (d) backward
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it sinks faster (c) it dissolves (d) it turns to stone
7. 7.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
8. 8.🌊 What pushes a floating cork upward? (a) the air above (b) the cork itself (c) the water (d) the tub
9. 9.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
10. 10.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) taste it (d) poke it with a finger
11. 11.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
12. 12.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the room it stands in (b) time for colour to show (c) the length of the stem
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the tub of water (b) the shape of the clay (c) the kind of clay (d) whether it floats
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a balloon (d) food colour
16. 16.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
17. 17.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🔍 Which is the odd one out? (a) a coin (b) a steel spoon (c) a glass marble (d) a paper helicopter
19. 19.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
20. 20.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
21. 21.True or false: a cork is less dense than water. (a) True (b) False
22. 22.True or false: turmeric powder is needed for the density tower. (a) False (b) True
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a mirror (c) a results table (d) a towel for spills
24. 24.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice cube (c) an iron nail (d) a cork
25. 25.True or false: a paper clip is not needed for the paper helicopter. (a) True (b) False
26. 26.⚖️ 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 the layers is the one thing we change. (a) False (b) True
27. 27.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a sunny window (d) yeast
28. 28.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) ice cubes (c) sunlight (d) a mirror
29. 29.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
30. 30.💧 Which of these is melting? (a) ice becoming water (b) a pond icing over (c) drops under a pot lid (d) a puddle drying up
31. 31.🍯 Which of these is less dense than water? (a) a coin (b) a glass marble (c) a ping-pong ball (d) a pebble
32. 32.🚁 Which of these falls slowly through the air? (a) a stone (b) a feather (c) a steel spoon (d) a crumpled paper ball
33. 33.True or false: wet hair drying is freezing. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a cork (b) a steel spoon (c) an empty capped bottle (d) a feather
35. 35.⚖️ 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 glass (c) the same white paper (d) the amount of water
36. 36.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
37. 37.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels farther (c) it goes backward first (d) it travels less far
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a magnet (d) a battery cell
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a white flower (d) food colour
40. 40.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket

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