Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 763 · 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 odd one out? (a) drops on a cold glass (b) wet clothes drying (c) wet hair drying (d) sweat drying on skin
2. 2.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
3. 3.True or false: a pebble floats on water. (a) False (b) True
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it blows air in (c) it holds water (d) it guides the balloon
6. 6.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) water (c) ice cubes (d) a balloon
7. 7.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) it turns to ice (c) it turns to salt (d) the water increases
8. 8.True or false: the balloon goes backward. (a) True (b) False
9. 9.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a wobbly chair (c) a high window ledge (d) from your raised hand
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a battery cell (c) a tub of water (d) small test objects
11. 11.💧 Which change is this: snow turning to water? (a) condensation (b) melting (c) freezing (d) evaporation
12. 12.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the kind of flower (b) time for colour to show (c) the length of the stem (d) the room it stands in
14. 14.🌈 In VIBGYOR, what number colour is violet?
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a big bowl (c) yeast (d) water
16. 16.True or false: a balloon is not needed for the density tower. (a) True (b) False
17. 17.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond
18. 18.True or false: sawdust does not dissolve in water. (a) False (b) True
19. 19.🧺 Which of these is needed for the water cycle bowl? (a) a big bowl (b) a balloon (c) turmeric powder (d) a magnet
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) True (b) False
21. 21.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
22. 22.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
23. 23.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a pencil (c) a balloon (d) safety scissors
24. 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a mirror (c) cooking oil (d) water with food colour
25. 25.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
26. 26.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) a magnet (c) a mirror (d) a paper clip
27. 27.True or false: a cotton thread does not let water climb. (a) True (b) False
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a balloon (d) a stiff postcard
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) turmeric powder (d) a balloon
30. 30.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
31. 31.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) False (b) True
32. 32.🛟 Which of these sinks in water? (a) an ice cube (b) a piece of thermocol (c) an iron nail (d) a cork
33. 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a balloon (c) two chairs (d) a long string
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) how big we blow it (c) the same straw (d) the same tape
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a magnet
36. 36.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) vinegar (d) a balloon
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) the order of pouring (c) the order of the layers (d) how much of each liquid
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🧺 Which of these is needed for the density tower? (a) a balloon (b) a tall clear glass (c) a magnet (d) a mirror

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