Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 674 · 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.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) wipe up spills at once (d) run around the tub
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it in a mirror (d) look at it through glass
3. 3.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) a small cup (c) sunlight (d) a battery cell
4. 4.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a big bowl (c) cling film (d) yeast
5. 5.True or false: sugar stirred well dissolves slower. (a) True (b) False
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.🔍 Which is the odd one out? (a) a cork (b) an ice-cream stick (c) a feather (d) an iron nail
8. 8.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) sticky tape (d) turmeric powder
10. 10.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
11. 11.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
12. 12.🛟 Which of these floats on water? (a) a ball of clay (b) a glass marble (c) a metal key (d) an ice cube
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🧺 Do we need water with food colour for the density tower? (a) needed (b) not needed
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the length of the blades (b) time to reach the floor (c) the drop height (d) the kind of paper
16. 16.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) coloured water (c) the spoon (d) cooking oil
17. 17.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is the one thing we change. (a) True (b) False
18. 18.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) turmeric powder (d) a mirror
19. 19.🛟 Does a cork float or sink in water? (a) sinks (b) floats
20. 20.⚖️ 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 change it (b) we measure it (c) we keep it the same
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a battery cell (d) bright sunlight
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) turmeric powder (d) food colour
23. 23.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) pour it on the floor (d) do not lick the spoon
24. 24.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a magnet (d) a sheet of white paper
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.True or false: a battery cell is not needed for the density tower. (a) True (b) False
27. 27.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it holds water (c) it blows air in (d) it makes it heavier
28. 28.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) slower (d) the same
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) False (b) True
30. 30.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) more friction, less far (c) less friction (d) it goes faster
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) evaporation (d) capillary action
32. 32.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) yeast (c) turmeric powder (d) a tub of water
33. 33.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) glucose powder (d) small pebbles
34. 34.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) the big log (d) neither of them
35. 35.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it speeds up (c) it travels farther (d) it goes backward first
36. 36.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) warm water (c) a mirror (d) sugar
37. 37.💧 Which of these is condensation? (a) ice becoming water (b) water becoming ice (c) dew on morning grass (d) a pond icing over
38. 38.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) yeast (c) honey (d) a tall clear glass
39. 39.🧺 Do we need water for the water cycle bowl? (a) not needed (b) needed
40. 40.⚖️ 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 amount of water (b) the same window (c) brightness of rainbow (d) the same glass

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