Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 161 · 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.🧺 Which of these is needed for the dissolving test? (a) honey (b) a teaspoon (c) a magnet (d) a mirror
2. 2.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (d) a magnetic chess set
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) the size of the bowl (c) how many drops form
4. 4.🌈 In VIBGYOR, what number colour is indigo?
5. 5.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
6. 6.True or false: baking soda dissolves in water. (a) False (b) True
7. 7.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) a magnet (c) cling film (d) a balloon
8. 8.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a suction hook (d) a drinking straw
9. 9.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
10. 10.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
13. 13.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a mirror (c) a long string (d) yeast
14. 14.True or false: sugar in icy water dissolves faster. (a) True (b) False
15. 15.🧺 Which of these is needed for the paper helicopter? (a) a strip of paper (b) a magnet (c) yeast (d) turmeric powder
16. 16.📘 What does “dense” mean? (a) heavy for its size (b) very colourful (c) very thin (d) very hot
17. 17.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
18. 18.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a compass needle (d) a vacuum cleaner
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the drop height (c) time to reach the floor (d) the length of the blades
21. 21.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
22. 22.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
23. 23.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🧺 Which of these is not needed for the paper helicopter? (a) a battery cell (b) a strip of paper (c) a ruler (d) safety scissors
25. 25.💧 Which change is this: butter going runny? (a) melting (b) freezing (c) evaporation (d) condensation
26. 26.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.True or false: a cork is denser than water. (a) True (b) False
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: a bicycle pump works by magnetism. (a) False (b) True
31. 31.⚖️ 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 order of the layers (b) the order of pouring (c) the same three liquids (d) how much of each liquid
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
33. 33.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) it stays still (c) straight down (d) backward
34. 34.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
35. 35.True or false: a magnet is needed for the density tower. (a) True (b) False
36. 36.True or false: a paper towel lets water climb up it. (a) True (b) False
37. 37.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they mix for ever (c) they separate again (d) they become solid
38. 38.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it can pop loudly (c) it turns into a kite (d) it gets too heavy
39. 39.⚖️ 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) how full the glass is (b) whether the card stays (c) the way we turn it
40. 40.True or false: a fluff of cotton falls slowly through the air. (a) False (b) True

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