Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 513 · 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 a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is what we measure. (a) False (b) True
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
4. 4.⚖️ 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
5. 5.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a strip of paper (c) a pencil (d) a balloon
6. 6.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a flower stem (d) a piece of foil
7. 7.🛟 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
8. 8.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) keep it away from faces (c) blow it till it bursts (d) put string round a neck
9. 9.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a mirror (c) safety scissors (d) a ruler
12. 12.💧 Which change is this: a misty bathroom mirror? (a) melting (b) freezing (c) condensation (d) evaporation
13. 13.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) food colour (d) chalk powder
14. 14.True or false: a strip of paper is not needed for the paper helicopter. (a) False (b) True
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) bright sunlight (c) a sunny window (d) a sheet of white paper
16. 16.⚖️ 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) whether it floats (d) the tub of water
17. 17.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is sticky (c) oil is less dense (d) oil is hot
19. 19.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) yeast (d) a stiff postcard
21. 21.🧺 Which of these is needed for the density tower? (a) a balloon (b) water with food colour (c) a battery cell (d) a mirror
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) small test objects (c) turmeric powder (d) yeast
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🌈 How many colours do we name in a rainbow (VIBGYOR)?
27. 27.True or false: a glass marble is less dense than water. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a plastic ruler (d) a strip of cloth
29. 29.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
30. 30.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to catch any spills (d) to grow plants
31. 31.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
32. 32.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) two chairs (d) a magnet
34. 34.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
35. 35.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
36. 36.🌈 In VIBGYOR, what number colour is yellow?
37. 37.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) sugar (c) a teaspoon (d) two clear glasses
39. 39.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we keep it the same (b) we measure it (c) we change it

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