Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 256 · 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 — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the drop height (c) the length of the blades (d) the kind of paper
3. 3.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) on top of the oil (d) under the honey
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a mirror (d) turmeric powder
5. 5.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar left unstirred (d) sugar stirred well
6. 6.🧺 Which of these is needed for the dissolving test? (a) honey (b) a teaspoon (c) a magnet (d) a mirror
7. 7.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
8. 8.True or false: sawdust does not dissolve in water. (a) True (b) False
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the amount of clay (c) the shape of the clay (d) whether it floats
11. 11.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
12. 12.🧺 Do we need turmeric powder for the paper helicopter? (a) not needed (b) needed
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the slope of the string (c) how big we blow it
14. 14.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) chew them (c) give them to a baby (d) throw them away safely
15. 15.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
16. 16.🧺 Do we need a balloon for the paper helicopter? (a) not needed (b) needed
17. 17.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the big log (c) neither of them (d) the small pebble
18. 18.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
19. 19.True or false: ice becoming water is freezing. (a) True (b) False
20. 20.⚖️ 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
21. 21.🔍 Which is the odd one out? (a) a puddle drying up (b) a pond icing over (c) sweat drying on skin (d) wet clothes drying
22. 22.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels less far (d) it travels farther
23. 23.True or false: an ice cube floats on water. (a) False (b) True
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a ruler (c) safety scissors (d) a battery cell
25. 25.True or false: chalk powder dissolves in water. (a) False (b) True
26. 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) two chairs (c) a balloon (d) a mirror
27. 27.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a tall clear glass (c) a spoon (d) a magnet
28. 28.🌈 In VIBGYOR, what number colour is orange?
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) time to dissolve (c) the kind of sugar (d) the amount of water
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a balloon
33. 33.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a paper towel (d) a plastic ruler
34. 34.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) more drops form (c) fewer drops form (d) the bowl freezes
35. 35.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls slowly (b) falls fast
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.True or false: a paper helicopter falls slowly through the air. (a) False (b) True
38. 38.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) neither of them (c) the crumpled ball (d) a sheet of glass
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) True (b) False
40. 40.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster

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