Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 425 · 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 ruler for the paper helicopter? (a) needed (b) not needed
2. 2.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) steel is very light (c) its hollow shape (d) it has a magnet
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) neither of them (d) the big log
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a battery cell
8. 8.🛟 Which of these sinks in water? (a) a metal key (b) a feather (c) a piece of thermocol (d) a ping-pong ball
9. 9.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar stirred well (c) sugar left unstirred (d) a big sugar cube
10. 10.🧺 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 balloon (d) a results table
11. 11.True or false: a flower stem lets water climb up it. (a) False (b) True
12. 12.🚀 Which of these goes forward? (a) water a swimmer pushes (b) air from the balloon (c) gas from the rocket (d) the swimmer
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a mirror
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a magnet
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
16. 16.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it still floats (d) it sinks
17. 17.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
18. 18.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is
19. 19.🛟 Which of these floats on water? (a) a ball of clay (b) an empty capped bottle (c) an iron nail (d) a glass marble
20. 20.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a results table (c) a battery cell (d) a mirror
21. 21.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) faster (c) it floats up (d) slower
22. 22.True or false: a battery cell is needed for the density tower. (a) True (b) False
23. 23.True or false: a magnet is needed for the water cycle bowl. (a) True (b) False
24. 24.True or false: drops under a pot lid is condensation. (a) False (b) True
25. 25.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a medicine dropper (c) a suction hook (d) a vacuum cleaner
26. 26.🥄 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) baking soda (d) chalk powder
27. 27.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
28. 28.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to stop the spinning (b) to weigh down the bottom (c) to make it magnetic (d) to make it fall slower
29. 29.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
30. 30.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is yellow (c) it is the densest (d) it is the coldest
31. 31.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
32. 32.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) sugar in icy water (d) powdered sugar
33. 33.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
34. 34.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it falls upward (c) it spins the other way (d) it turns blue
35. 35.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) time to dissolve (c) the amount of water (d) the water temperature
37. 37.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) water (c) a big bowl (d) a mirror
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a balloon
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic

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