Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 567 · 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.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
2. 2.⚖️ 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
3. 3.True or false: a steel spoon sinks in water. (a) True (b) False
4. 4.⚖️ 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 same glass (b) the amount of water (c) the same window (d) the time of day
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same white paper
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the stirring (c) the water temperature (d) the kind of sugar
7. 7.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) sawdust (d) table salt
9. 9.True or false: a cork is less dense than water. (a) False (b) True
10. 10.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a steel spoon (c) a feather (d) a paper helicopter
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
12. 12.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
13. 13.⚖️ 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 glass (b) the order of the layers (c) the same three liquids (d) the order of pouring
14. 14.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a battery cell (c) vinegar (d) two chairs
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) cling film (c) a battery cell (d) a small cup
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) distance it travels (c) the same string (d) the same straw
17. 17.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a results table (c) a tub of water (d) a towel for spills
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
19. 19.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the amount of clay (c) the kind of clay (d) whether it floats
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) yeast (c) small test objects (d) a towel for spills
22. 22.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a stone (c) a steel spoon (d) a feather
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.True or false: a mirror is needed for the water rainbow. (a) True (b) False
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
26. 26.🌈 How many colours do we name in a rainbow (VIBGYOR)?
27. 27.True or false: air from the balloon goes forward. (a) True (b) False
28. 28.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
29. 29.🛟 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
30. 30.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
32. 32.🧺 Do we need a mirror for the water cycle bowl? (a) needed (b) not needed
33. 33.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) honey (d) turmeric powder
35. 35.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the sugar turns to salt (c) the water turns solid (d) all of it dissolves
36. 36.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) sunlight (c) a big bowl (d) a mirror
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) it turns to salt (c) it turns to ice (d) the water increases
40. 40.⚖️ 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 measure it (b) we change it (c) we keep it the same

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids