Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 591 · 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.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) the sugar turns to salt (c) all of it dissolves (d) some stays undissolved
2. 2.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) chew them (c) give them to a baby (d) keep them in your mouth
3. 3.🔍 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 glass breaks (c) the card stays on (d) the water turns to ice
4. 4.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it floats (d) it bounces up
5. 5.True or false: a balloon is not needed for the dissolving test. (a) True (b) False
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.True or false: two chairs is needed for the balloon rocket. (a) False (b) True
8. 8.🍯 Which of these is denser than water? (a) honey (b) a cork (c) an ice cube (d) air
9. 9.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a battery cell (d) a sheet of white paper
10. 10.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
11. 11.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) blue (d) red
12. 12.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🧺 Do we need honey for the density tower? (a) not needed (b) needed
15. 15.True or false: yeast is not needed for the water rainbow. (a) False (b) True
16. 16.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
17. 17.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a medicine dropper (d) a magnetic pin holder
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a mirror (d) turmeric powder
19. 19.True or false: a fluff of cotton falls fast through the air. (a) False (b) True
20. 20.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) sea water is warm (d) its hollow shape
21. 21.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) yeast (c) sunlight (d) water
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) True (b) False
23. 23.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) a small cup (c) water (d) a balloon
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) turmeric powder (d) a glass of water
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a glass of water (d) food colour
27. 27.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
28. 28.True or false: the balloon goes backward. (a) True (b) False
29. 29.True or false: wet hair drying is condensation. (a) True (b) False
30. 30.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🧺 Do we need a magnet for the paper helicopter? (a) not needed (b) needed
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) False (b) True
36. 36.True or false: sugar in icy water dissolves faster. (a) True (b) False
37. 37.🛟 Which of these floats on water? (a) a pebble (b) an ice-cream stick (c) a ball of clay (d) a steel spoon
38. 38.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) cooking oil (c) a tall clear glass (d) a battery cell
39. 39.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a battery cell (c) a magnet (d) a tub of water
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is what we measure. (a) True (b) False

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