Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 383 · 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.🧺 Do we need honey for the density tower? (a) not needed (b) needed
2. 2.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water is magnetic (c) it changes colour (d) hot water can scald
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a few hours of waiting (d) turmeric powder
4. 4.🚁 Which of these falls slowly through the air? (a) a fluff of cotton (b) a stone (c) a steel spoon (d) a coin
5. 5.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
6. 6.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) a misty bathroom mirror (b) making ice lollies (c) drops on a cold glass (d) dew on morning grass
8. 8.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🧺 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) food colour (d) a white flower
11. 11.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a vacuum cleaner (d) a bicycle pump
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a mirror
13. 13.🍯 Which of these is less dense than water? (a) honey (b) very salty water (c) a pebble (d) a ping-pong ball
14. 14.⚖️ 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) the way we turn it (b) the same card (c) the same glass (d) how full the glass is
15. 15.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) a spoon (c) honey (d) a battery cell
16. 16.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
18. 18.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes less far (d) it goes much farther
19. 19.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a flower stem (d) a piece of foil
20. 20.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) many colours mixed (d) tiny drops of water
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) False (b) True
22. 22.⚖️ 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 window (c) the amount of water (d) the same glass
23. 23.True or false: a paper helicopter falls fast through the air. (a) True (b) False
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
25. 25.True or false: the balloon goes backward. (a) False (b) True
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a battery cell (d) a sunny window
27. 27.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
28. 28.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
29. 29.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels farther (d) it travels less far
30. 30.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) a tub of water (d) a balloon
31. 31.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
32. 32.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) juice likes plastic (d) air pushes it up
33. 33.True or false: a battery cell is not needed for the paper helicopter. (a) True (b) False
34. 34.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
35. 35.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
36. 36.True or false: yeast is needed for the paper helicopter. (a) True (b) False
37. 37.🚁 Why does the paper helicopter fall slowly? (a) it has no weight (b) a magnet holds it (c) the floor pushes it (d) air pushes on its blades
38. 38.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) sharp kitchen shears (d) gardening shears
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.🧺 Which of these is needed for the density tower? (a) a balloon (b) yeast (c) turmeric powder (d) honey

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