Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 396 · 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 the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
3. 3.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
4. 4.True or false: yeast is needed for the density tower. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a sugar cube (d) a paper towel
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.💧 Which of these lets water climb up it? (a) a paper towel (b) a steel spoon (c) a glass marble (d) a piece of foil
8. 8.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it blows air in (c) it guides the balloon (d) it holds water
10. 10.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) safety scissors (c) a magnet (d) a strip of paper
11. 11.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
12. 12.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
13. 13.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) vinegar (c) a mirror (d) a balloon
14. 14.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
15. 15.🥄 Which of these does not dissolve in water? (a) table salt (b) cooking oil (c) glucose powder (d) baking soda
16. 16.True or false: a flower stem lets water climb up it. (a) False (b) True
17. 17.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the order of the layers (c) the same three liquids (d) the same glass
18. 18.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
19. 19.⚖️ 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 window (b) brightness of rainbow (c) the same glass (d) the amount of water
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a magnet (d) bright sunlight
21. 21.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it stays still in air (c) it flies upward (d) it turns into a ball
22. 22.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
23. 23.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the same three liquids (c) the order of the layers
24. 24.🧺 Do we need turmeric powder for the water cycle bowl? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cold water (c) honey (d) a teaspoon
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
27. 27.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls fast (b) falls slowly
28. 28.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
29. 29.💧 Which of these does not let water climb? (a) a piece of foil (b) a cotton thread (c) a strip of cloth (d) a paper towel
30. 30.🥄 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) sawdust (d) sugar
31. 31.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
32. 32.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is hot (d) the straw is magnetic
33. 33.⚖️ 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 order of the layers”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🧺 Which of these is not needed for the density tower? (a) honey (b) a mirror (c) a tall clear glass (d) cooking oil
35. 35.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
37. 37.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains
38. 38.True or false: yeast is needed for the paper helicopter. (a) True (b) False
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of water (b) the amount of sugar (c) time to dissolve (d) the water temperature
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True

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