Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 109 · 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 the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) how full the glass is (c) whether the card stays (d) the same glass
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) look at it in a mirror (d) stare at the Sun
5. 5.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) glucose powder (d) cooking oil
6. 6.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) the spoon (c) coloured water (d) cooking oil
7. 7.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
8. 8.🧺 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) yeast (d) a sink or a bucket
9. 9.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
10. 10.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it turns blue (c) it spins the other way (d) it does not fall
11. 11.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) sharp kitchen shears (c) a paper cutter (d) gardening shears
12. 12.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it can float (d) it dissolves
13. 13.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) water becoming ice (b) a pond icing over (c) butter going runny (d) making ice lollies
15. 15.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) leave them wet (c) wipe them dry (d) pour more water
16. 16.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) sunlight (c) a magnet (d) water
17. 17.True or false: turmeric powder is needed for the density tower. (a) True (b) False
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the amount of clay (c) the shape of the clay
19. 19.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) sugar (b) food colour (c) chalk powder (d) table salt
21. 21.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the water turns solid (d) the sugar turns to salt
22. 22.True or false: a dry leaf sinks in water. (a) True (b) False
23. 23.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
24. 24.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
25. 25.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) magnetism (d) friction
27. 27.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) time to dissolve (c) the stirring (d) the amount of water
29. 29.True or false: a pebble sinks in water. (a) True (b) False
30. 30.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a battery cell (c) a tub of water (d) small test objects
32. 32.True or false: a battery cell is needed for the paper helicopter. (a) False (b) True
33. 33.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
34. 34.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the amount of water (b) the size of the bowl (c) the cling film cover (d) how many drops form
35. 35.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
36. 36.💧 Which of these is freezing? (a) water becoming ice (b) sweat drying on skin (c) wet clothes drying (d) wet hair drying
37. 37.True or false: a steel spoon falls fast through the air. (a) True (b) False
38. 38.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
39. 39.True or false: turmeric powder is not needed for the density tower. (a) False (b) True
40. 40.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward

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