Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 135 · 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: a puddle drying up is evaporation. (a) False (b) True
2. 2.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) it has a magnet (d) its hollow shape
3. 3.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) the balloon (d) gas from the rocket
4. 4.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.True or false: a magnet is not needed for the paper helicopter. (a) False (b) True
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) yeast (c) small test objects (d) a towel for spills
9. 9.⚖️ 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) the time we wait (b) the cling film cover (c) how many drops form (d) sun or shade
10. 10.🚁 Which of these falls fast through the air? (a) a stone (b) a fluff of cotton (c) a toy parachute (d) an open sheet of paper
11. 11.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) water (c) a balloon (d) ice cubes
12. 12.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) faster (c) they turn to ice (d) slower
13. 13.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
14. 14.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) True (b) False
16. 16.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) cotton wool (c) sugar (d) a teaspoon
17. 17.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) backward (c) straight down (d) it stays still
18. 18.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is the one thing we change. (a) True (b) False
19. 19.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
20. 20.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sunny window (c) a battery cell (d) a mirror
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
22. 22.True or false: a stone falls fast through the air. (a) False (b) True
23. 23.🧺 Which of these is not needed for the balloon rocket? (a) yeast (b) sticky tape (c) a balloon (d) two chairs
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
25. 25.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) juice likes plastic (d) the straw is magnetic
26. 26.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) a roof edge (c) from your raised hand (d) a high window ledge
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
28. 28.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a feather (c) a glass marble (d) a stone
30. 30.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) run around the tub (d) wipe up spills at once
31. 31.🌈 In VIBGYOR, what number colour is yellow?
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) the same glass (c) the same card (d) whether the card stays
33. 33.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
34. 34.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) water with food colour (c) a spoon (d) turmeric powder
35. 35.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it does not fall (c) it falls upward (d) it turns blue
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
37. 37.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the time of day (b) the same glass (c) the same window (d) brightness of rainbow
39. 39.🧺 Which of these is not needed for the density tower? (a) a battery cell (b) cooking oil (c) honey (d) a spoon
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) turmeric powder

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