Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 778 · 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.🎈 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
2. 2.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
3. 3.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it floats (c) it dissolves (d) it bounces up
4. 4.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) yeast (c) sticky tape (d) a long string
7. 7.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
10. 10.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
11. 11.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
12. 12.True or false: a big sugar cube dissolves slower. (a) False (b) True
13. 13.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.True or false: a feather sinks in water. (a) True (b) False
15. 15.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
16. 16.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a mirror (d) a white flower
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.💧 Which change is this: water becoming ice? (a) evaporation (b) condensation (c) freezing (d) melting
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
22. 22.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) powdered sugar (d) both the same
23. 23.⚖️ 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 kept the same. (a) True (b) False
24. 24.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
25. 25.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
26. 26.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a battery cell (c) two chairs (d) yeast
27. 27.True or false: a mirror is not needed for the density tower. (a) False (b) True
28. 28.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) a high window ledge (c) from your raised hand (d) a roof edge
29. 29.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) it stays still (c) straight down (d) backward
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the amount of sugar
31. 31.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a small cup (c) a balloon (d) water
32. 32.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it sinks (d) it still floats
33. 33.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it goes less far (d) it turns into a kite
34. 34.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
35. 35.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.🔍 Which is the odd one out? (a) a stone (b) a toy parachute (c) a fluff of cotton (d) a feather
38. 38.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
39. 39.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) a magnet (d) water with food colour
40. 40.🔍 Which is the odd one out? (a) air (b) honey (c) a glass marble (d) a pebble

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