Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 325 · 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? Which of these is kept the same? (a) the paper clip (b) time to reach the floor (c) the length of the blades
2. 2.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) cling film (c) ice cubes (d) water
3. 3.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a balloon (c) yeast (d) small test objects
4. 4.🚁 Which of these falls slowly through the air? (a) an open sheet of paper (b) a stone (c) a coin (d) a glass marble
5. 5.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
6. 6.True or false: safety scissors is not needed for the paper helicopter. (a) False (b) True
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) two chairs (d) a balloon
8. 8.True or false: drops under a pot lid is condensation. (a) True (b) False
9. 9.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
10. 10.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
11. 11.🥄 Which of these dissolves slower? (a) sugar stirred well (b) a big sugar cube (c) sugar in warm water (d) powdered sugar
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.⚖️ 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 three liquids (b) the order of pouring (c) the order of the layers
14. 14.🎈 When does the balloon rocket stop? (a) when it turns blue (b) it never stops (c) when it gets cold (d) when the air runs out
15. 15.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) some water evaporates (c) the water increases (d) it turns to salt
16. 16.True or false: a magnet is not needed for the density tower. (a) True (b) False
17. 17.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) look for leftover grains (d) smell it closely
18. 18.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a battery cell (c) a mirror (d) cling film
19. 19.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
20. 20.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) time for colour to show (c) the kind of flower (d) the room it stands in
22. 22.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the big log (c) the small pebble (d) neither of them
23. 23.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
26. 26.🛟 Does a feather float or sink in water? (a) sinks (b) floats
27. 27.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
28. 28.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) particles move faster (c) warm water is thicker (d) cold water is wet
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) False (b) True
30. 30.True or false: sugar left unstirred dissolves slower. (a) False (b) True
31. 31.True or false: a glass marble falls slowly through the air. (a) False (b) True
32. 32.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) all of it dissolves (c) some stays undissolved (d) the water turns solid
33. 33.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) the flat sheet (c) the crumpled ball (d) a sheet of glass
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) the slope of the string (c) the same straw (d) distance it travels
35. 35.🧺 Which of these is not needed for the density tower? (a) honey (b) water with food colour (c) a tall clear glass (d) a magnet
36. 36.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
37. 37.🌈 In VIBGYOR, what number colour is yellow?
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a stiff postcard (d) a glass of water
39. 39.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) it has no weight (c) the floor pushes it (d) air pushes on its blades
40. 40.True or false: a pencil is needed for the paper helicopter. (a) True (b) False

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