Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 669 · 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: water is not needed for the water cycle bowl. (a) False (b) True
2. 2.True or false: two chairs is needed for the balloon rocket. (a) False (b) True
3. 3.True or false: a compass needle works by magnetism. (a) True (b) False
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) yeast (c) a tub of water (d) small test objects
5. 5.🚀 Which of these goes backward? (a) the rocket (b) water from the oars (c) the balloon (d) the swimmer
6. 6.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
7. 7.💧 Which of these does not let water climb? (a) a glass marble (b) a strip of cloth (c) a paper towel (d) a piece of chalk
8. 8.🧺 Which of these is needed for the dissolving test? (a) honey (b) a clock or timer (c) cotton wool (d) a mirror
9. 9.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a vacuum cleaner (d) a bicycle pump
10. 10.🔍 Which is the odd one out? (a) wet hair drying (b) water becoming ice (c) sweat drying on skin (d) a puddle drying up
11. 11.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) two chairs (c) sticky tape (d) a drinking straw
13. 13.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
14. 14.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a steel spoon (d) a strip of cloth
15. 15.🛟 How should you check if the sugar has dissolved? (a) taste it (b) look for leftover grains (c) smell it closely (d) poke it with a finger
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the kind of clay (b) whether it floats (c) the amount of clay (d) the shape of the clay
17. 17.True or false: honey is needed for the density tower. (a) True (b) False
18. 18.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
20. 20.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) fewer drops form (c) the water turns red (d) more drops form
21. 21.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a medicine dropper (d) a fridge magnet
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sunny window
26. 26.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it turns blue (c) it floats up (d) it settles at the bottom
27. 27.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it melts (d) it sinks
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) a clear glass of water (d) bright sunlight
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
30. 30.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
31. 31.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the straw is heavy (c) a magnet pulls it (d) the string pulls it
32. 32.True or false: sweat drying on skin is condensation. (a) True (b) False
33. 33.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
35. 35.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
37. 37.🌈 In VIBGYOR, what number colour is blue?
38. 38.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the tub of water
40. 40.True or false: yeast is needed for the float-or-sink test. (a) True (b) False

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