Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 169 · 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.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
2. 2.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) slower (d) faster
3. 3.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) red (d) orange
4. 4.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🔍 Which is the odd one out? (a) snow turning to water (b) ice becoming water (c) butter going runny (d) wet clothes drying
6. 6.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a magnetic chess set (d) a fridge magnet
9. 9.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) cling film (c) ice cubes (d) sunlight
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a balloon (d) yeast
11. 11.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
12. 12.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it travels farther (d) it speeds up
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) the order of pouring (c) the order of the layers (d) the same three liquids
14. 14.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
15. 15.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a magnet (c) turmeric powder (d) a drinking straw
16. 16.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) rain (b) sunshine (c) lightning (d) wind
17. 17.🔍 Which is the odd one out? (a) a glass marble (b) a feather (c) an ice cube (d) an ice-cream stick
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) how big we blow it (c) the same string (d) the same straw
20. 20.🍯 Which of these is denser than water? (a) a cork (b) a ping-pong ball (c) cooking oil (d) a pebble
21. 21.💧 Which of these is evaporation? (a) butter going runny (b) snow turning to water (c) wet clothes drying (d) a pond icing over
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a glass of water (d) a towel
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) never look at the Sun (d) look at it through glass
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
27. 27.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
28. 28.True or false: safety scissors is needed for the paper helicopter. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a cork (b) very salty water (c) a coin (d) a glass marble
30. 30.True or false: turmeric powder is not needed for the paper helicopter. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) sweat drying on skin (b) wet clothes drying (c) wet hair drying (d) a pond icing over
32. 32.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) a sunny window (d) a mirror
33. 33.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) safety scissors (d) gardening shears
34. 34.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) a magnet (d) small test objects
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.True or false: a pebble floats on water. (a) True (b) False
37. 37.True or false: a suction hook works by air pressure. (a) False (b) True
38. 38.True or false: cooking oil is needed for the density tower. (a) True (b) False
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) True (b) False
40. 40.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed

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