Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 829 · 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 a towel for spills for the float-or-sink test? (a) not needed (b) needed
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a magnet
4. 4.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a towel (d) yeast
6. 6.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a glass of water (d) a towel
8. 8.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) a paper cutter (d) safety scissors
9. 9.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) two chairs (c) a drinking straw (d) a magnet
11. 11.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the water turns to ice (d) the glass breaks
12. 12.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) the glass gets hot (c) three separate layers (d) one mixed colour
13. 13.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) a tall clear glass (c) a spoon (d) water with food colour
15. 15.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) warm water (d) honey
18. 18.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) safety scissors (c) a ruler (d) a mirror
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
20. 20.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
23. 23.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) under the ground (c) in front of you (d) straight above you
24. 24.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar left unstirred (d) sugar stirred well
25. 25.🧺 Do we need cling film for the water cycle bowl? (a) not needed (b) needed
26. 26.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
27. 27.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
28. 28.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
29. 29.True or false: wet clothes drying is condensation. (a) False (b) True
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a suction hook (d) a compass needle
33. 33.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) cooking oil (c) a balloon (d) honey
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
35. 35.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
36. 36.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) a strip of paper (c) a ruler (d) a pencil
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the room it stands in (c) the amount of water (d) the length of the stem
39. 39.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) slower (c) not at all (d) faster
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids