Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 217 · 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.True or false: honey is needed for the density tower. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a compass needle (d) a medicine dropper
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.True or false: a balloon is not needed for the density tower. (a) True (b) False
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) yeast (c) a tall clear glass (d) a spoon
6. 6.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) pour more water (c) slide on them (d) leave them wet
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) True (b) False
8. 8.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it floats (c) it sinks (d) it bounces up
9. 9.⚖️ 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 keep it the same (b) we change it (c) we measure it
10. 10.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) a battery cell (d) water with food colour
12. 12.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a crumpled paper ball (c) a feather (d) a toy parachute
13. 13.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
15. 15.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) smell it closely (d) look for leftover grains
16. 16.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
17. 17.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) safety scissors (c) yeast (d) a paper clip
20. 20.🌈 In VIBGYOR, what number colour is red?
21. 21.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.🥄 Which of these does not dissolve in water? (a) small pebbles (b) food colour (c) sugar (d) baking soda
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) the same straw (c) how big we blow it (d) the slope of the string
24. 24.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a wobbly chair (c) a high window ledge (d) from your raised hand
25. 25.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
26. 26.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is the densest (c) it is the coldest (d) it is yellow
27. 27.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) refraction (d) evaporation
28. 28.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) a small cup (c) a big bowl (d) water
29. 29.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) sand (d) smoke
30. 30.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
31. 31.True or false: a mirror is needed for the water rainbow. (a) False (b) True
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) how many drops form (b) the amount of water (c) the cling film cover (d) sun or shade
33. 33.True or false: a flower stem does not let water climb. (a) False (b) True
34. 34.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same window (b) the amount of water (c) the same glass (d) the same white paper
36. 36.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it sinks faster (d) it can float
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
39. 39.True or false: sugar stirred well dissolves slower. (a) False (b) True
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 what we measure? (a) the same glass (b) the same three liquids (c) how much of each liquid (d) the order of the layers

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