Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 598 · 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? What do we do with “time to reach the floor”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a feather (c) a coin (d) a fluff of cotton
3. 3.True or false: sugar does not dissolve in water. (a) False (b) True
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is the one thing we change. (a) False (b) True
6. 6.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) cooking oil (c) a spoon (d) water with food colour
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.⚖️ 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
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) brightness of rainbow (c) the time of day (d) the same glass
12. 12.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) a sheet of glass (c) the flat sheet (d) the crumpled ball
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
15. 15.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it bounces up (c) it sinks (d) it floats
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
18. 18.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
19. 19.True or false: a metal key floats on water. (a) False (b) True
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a magnet (c) a tub of water (d) yeast
22. 22.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
23. 23.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
24. 24.🛟 Which of these sinks in water? (a) a feather (b) an ice-cream stick (c) a dry leaf (d) a steel spoon
25. 25.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a glass marble (d) a plastic ruler
26. 26.📘 What do we call water with sugar dissolved in it? (a) a magnet (b) a crystal (c) a rainbow (d) a solution
27. 27.True or false: cooking oil is denser than water. (a) False (b) True
28. 28.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it dissolves (c) it floats up (d) it turns blue
29. 29.⚖️ 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) the same straw (c) how big we blow it (d) the same tape
30. 30.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
31. 31.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
32. 32.True or false: sugar left unstirred dissolves faster. (a) False (b) True
33. 33.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
34. 34.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.True or false: sugar stirred well dissolves faster. (a) False (b) True
36. 36.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cotton wool (c) sugar (d) warm water
37. 37.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) water (c) a battery cell (d) a big bowl
38. 38.True or false: a misty bathroom mirror is condensation. (a) False (b) True
39. 39.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
40. 40.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False

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