Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 369 · 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 — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) False (b) True
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) powdered sugar
5. 5.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
7. 7.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a piece of chalk (d) a piece of foil
8. 8.🔍 Which is the odd one out? (a) a paper helicopter (b) a glass marble (c) a coin (d) a crumpled paper ball
9. 9.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a coin (c) a dry leaf (d) a feather
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) yeast (d) a glass of water
11. 11.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
12. 12.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
13. 13.💧 Which of these is melting? (a) wet hair drying (b) butter going runny (c) wet clothes drying (d) a pond icing over
14. 14.True or false: a big bowl is not needed for the water cycle bowl. (a) False (b) True
15. 15.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to grow plants (d) to cool the glass
16. 16.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
17. 17.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the glass is painted (d) the paper makes colours
18. 18.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil makes it rain (d) oil turns into honey
19. 19.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) water a swimmer pushes (d) the rowing boat
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a glass of water (d) a stiff postcard
21. 21.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) gardening shears (d) safety scissors
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
24. 24.🧺 Which of these is needed for the density tower? (a) a balloon (b) water with food colour (c) a battery cell (d) yeast
25. 25.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.⚖️ 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) how many drops form (b) the size of the bowl (c) the amount of water (d) sun or shade
28. 28.🔍 Which is the odd one out? (a) ice becoming water (b) butter going runny (c) snow turning to water (d) making ice lollies
29. 29.💧 Which of these is melting? (a) a puddle drying up (b) drops on a cold glass (c) sweat drying on skin (d) snow turning to water
30. 30.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a glass marble (c) a toy parachute (d) a stone
31. 31.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) a battery cell
33. 33.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) the water increases (c) it turns to ice (d) it turns to salt
34. 34.⚖️ 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 kept the same. (a) False (b) True
35. 35.True or false: honey is less dense than water. (a) True (b) False
36. 36.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it stops in the air (c) it floats up (d) faster
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a magnet
38. 38.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
39. 39.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) only yellow light (d) tiny drops of water
40. 40.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed

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