Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 243 · 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.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
2. 2.💧 Which change is this: a pond icing over? (a) melting (b) condensation (c) evaporation (d) freezing
3. 3.🥄 Which of these dissolves slower? (a) a big sugar cube (b) sugar in warm water (c) sugar stirred well (d) powdered sugar
4. 4.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) on top of the oil (c) in the oil layer (d) at the very bottom
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a feather (c) a fluff of cotton (d) a toy parachute
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) a spoon (c) honey (d) water with food colour
8. 8.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
10. 10.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
11. 11.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
12. 12.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) slide on them (c) wipe them dry (d) leave them wet
13. 13.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it floats up (c) faster (d) it stops in the air
14. 14.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) False (b) True
15. 15.True or false: a ping-pong ball is less dense than water. (a) False (b) True
16. 16.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) sunshine (b) wind (c) lightning (d) rain
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same card (b) how full the glass is (c) whether the card stays
18. 18.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) sugar (b) table salt (c) cooking oil (d) baking soda
20. 20.True or false: air from the balloon goes backward. (a) False (b) True
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a battery cell (d) a glass of water
22. 22.True or false: a plastic ruler does not let water climb. (a) False (b) True
23. 23.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
24. 24.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
25. 25.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a mirror (d) a sunny window
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) True (b) False
29. 29.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a fridge magnet (d) a vacuum cleaner
30. 30.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
31. 31.True or false: a pebble floats on water. (a) True (b) False
32. 32.🥄 Which of these does not dissolve in water? (a) sugar (b) table salt (c) food colour (d) sawdust
33. 33.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) a magnet (c) a big bowl (d) turmeric powder
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a tub of water (d) yeast
35. 35.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the amount of colour (d) the room it stands in
37. 37.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
38. 38.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a battery cell
40. 40.⚖️ 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 same glass (b) the order of the layers (c) the order of pouring

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