Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 809 · 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 cork sinks in water. (a) True (b) False
2. 2.True or false: a fluff of cotton falls slowly through the air. (a) False (b) True
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) turmeric powder (c) sticky tape (d) two chairs
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
5. 5.True or false: the rocket goes forward. (a) False (b) True
6. 6.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a mirror (c) yeast (d) small test objects
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) two chairs (d) vinegar
9. 9.⚖️ 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 keep it the same (b) we change it (c) we measure it
10. 10.⚖️ 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) the same glass (b) how full the glass is (c) whether the card stays (d) the same card
11. 11.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) how much of each liquid (b) the same three liquids (c) the order of the layers (d) the order of pouring
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a paper towel (d) a steel spoon
14. 14.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) True (b) False
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a magnet
19. 19.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is heavy (d) hot water is magnetic
20. 20.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels less far (d) it travels farther
21. 21.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
22. 22.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
23. 23.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
24. 24.⚖️ 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) brightness of rainbow (d) the same glass
25. 25.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
26. 26.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar in warm water (d) sugar left unstirred
27. 27.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) powdered sugar (d) the sugar cube
28. 28.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) not at all (d) the same
29. 29.🌈 In VIBGYOR, what number colour is yellow?
30. 30.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
31. 31.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) a paper cutter (c) sharp kitchen shears (d) gardening shears
32. 32.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a piece of chalk (d) a rubber eraser
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is kept the same. (a) False (b) True
36. 36.🌈 How many colours do we name in a rainbow (VIBGYOR)?
37. 37.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a mirror (c) a balloon rocket (d) a fridge magnet
38. 38.💧 Which change is this: a puddle drying up? (a) melting (b) evaporation (c) condensation (d) freezing
39. 39.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) honey (c) a tall clear glass (d) water with food colour
40. 40.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands

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