Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 131 · 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.💧 Which of these lets water climb up it? (a) a glass marble (b) a flower stem (c) a rubber eraser (d) a plastic ruler
2. 2.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
3. 3.⚖️ 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) the amount of water (b) the time we wait (c) sun or shade (d) the size of the bowl
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a long string (c) sticky tape (d) a drinking straw
6. 6.🔍 Which is the odd one out? (a) air (b) a pebble (c) cooking oil (d) a cork
7. 7.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
8. 8.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
9. 9.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it floats up (c) it stops in the air (d) faster
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) leave water on the floor (d) play near a deep pond
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) True (b) False
13. 13.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) the air outside (c) the bowl itself (d) water warmed by the Sun
14. 14.🍯 Which of these is less dense than water? (a) a pebble (b) honey (c) a ping-pong ball (d) a coin
15. 15.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is kept the same. (a) True (b) False
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) faster (c) they never dry (d) they turn to ice
20. 20.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) yeast (c) water (d) ice cubes
21. 21.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a vacuum cleaner (d) a bicycle pump
22. 22.🌈 In VIBGYOR, what number colour is blue?
23. 23.💧 Which of these is evaporation? (a) butter going runny (b) a pond icing over (c) a puddle drying up (d) drops under a pot lid
24. 24.True or false: a battery cell is not needed for the density tower. (a) True (b) False
25. 25.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls slowly (b) falls fast
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
28. 28.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.⚖️ 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 amount of water (b) how many drops form (c) the cling film cover (d) sun or shade
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) True (b) False
32. 32.💧 Which of these is melting? (a) drops on a cold glass (b) water becoming ice (c) sweat drying on skin (d) ice becoming water
33. 33.True or false: gas from the rocket goes forward. (a) True (b) False
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same string
35. 35.🛟 Which of these sinks in water? (a) an ice cube (b) a dry leaf (c) a cork (d) a pebble
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a magnet
37. 37.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a paper clip (c) yeast (d) a ruler
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a mirror (d) small test objects
39. 39.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
40. 40.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they mix for ever (c) they turn to honey (d) they become solid

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