Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 551 · 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 — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) True (b) False
3. 3.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is heavy (c) it changes colour (d) hot water is magnetic
4. 4.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.📘 What pulls the paper helicopter down to the floor? (a) air pressure (b) magnetism (c) gravity (d) the wind
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the amount of colour (b) time for colour to show (c) the length of the stem
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the amount of water (b) the time we wait (c) how many drops form (d) sun or shade
11. 11.True or false: a fluff of cotton falls fast through the air. (a) True (b) False
12. 12.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a mirror (d) a sheet of white paper
13. 13.💧 Which change is this: wet hair drying? (a) condensation (b) melting (c) evaporation (d) freezing
14. 14.🧺 Which of these is not needed for the paper helicopter? (a) turmeric powder (b) a strip of paper (c) safety scissors (d) a pencil
15. 15.⚖️ 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) the amount of water (c) time to dissolve (d) the stirring
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) small test objects (c) a results table (d) a towel for spills
17. 17.🌈 In VIBGYOR, what number colour is orange?
18. 18.🧺 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) yeast
19. 19.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it floats higher (d) it turns blue
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a battery cell (d) a balloon
21. 21.🍯 Which of these is denser than water? (a) a pebble (b) air (c) cooking oil (d) a cork
22. 22.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
23. 23.True or false: a mirror is needed for the dissolving test. (a) False (b) True
24. 24.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) in the water layer (c) in the honey layer (d) under the honey
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
26. 26.⚖️ 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 keep it the same (b) we measure it (c) we change it
27. 27.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
28. 28.True or false: a balloon is needed for the water rainbow. (a) True (b) False
29. 29.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
30. 30.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) time to reach the floor (b) the length of the blades (c) the drop height (d) the person dropping
31. 31.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) small test objects (c) a results table (d) a tub of water
33. 33.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a battery cell (c) a paper clip (d) a mirror
34. 34.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) cold water is wet (c) warm water is thicker (d) sugar likes the dark
35. 35.🍯 Which of these is denser than water? (a) a cork (b) a glass marble (c) an ice cube (d) air
36. 36.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
37. 37.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
38. 38.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
39. 39.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) sunlight (c) a big bowl (d) a small cup
40. 40.True or false: cling film is not needed for the water cycle bowl. (a) False (b) True

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