Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 288 · 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.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
2. 2.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a sugar cube
5. 5.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a paper helicopter (c) an open sheet of paper (d) a feather
6. 6.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) a ball of clay (d) a dry leaf
7. 7.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) sea water is warm (d) steel is very light
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a mirror (c) two chairs (d) a long string
9. 9.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) behind you (d) straight above you
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ 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 way we turn it
12. 12.🛟 Which of these floats on water? (a) a pebble (b) a dry leaf (c) an iron nail (d) a glass marble
13. 13.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) from your raised hand (c) a wobbly chair (d) a high window ledge
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same window
15. 15.True or false: a magnet is needed for the water rainbow. (a) True (b) False
16. 16.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) honey (c) a balloon (d) a spoon
17. 17.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
18. 18.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the cling film cover (c) the amount of water (d) the size of the bowl
21. 21.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) leave water on the floor (d) wipe up spills at once
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
23. 23.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) the bowl freezes (c) fewer drops form (d) more drops form
24. 24.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a glass marble (d) a steel spoon
25. 25.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a glass marble (d) a paper towel
26. 26.⚖️ 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
27. 27.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is what we measure. (a) False (b) True
30. 30.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
31. 31.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
33. 33.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a pencil (c) a balloon (d) a magnet
34. 34.True or false: sugar in warm water dissolves faster. (a) False (b) True
35. 35.True or false: food colour dissolves in water. (a) False (b) True
36. 36.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a paper clip (c) yeast (d) safety scissors
38. 38.🔍 Which is the odd one out? (a) wet clothes drying (b) drops on a cold glass (c) dew on morning grass (d) drops under a pot lid
39. 39.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a balloon (c) a pencil (d) a ruler
40. 40.🌈 How many colours do we name in a rainbow (VIBGYOR)?

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