Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 260 · 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 is the odd one out? (a) a sugar cube (b) a piece of foil (c) a strip of cloth (d) a cotton thread
2. 2.🔍 Which is the odd one out? (a) a puddle drying up (b) wet hair drying (c) wet clothes drying (d) drops under a pot lid
3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
4. 4.⚖️ 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
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) small test objects (d) turmeric powder
6. 6.🔍 Which is the odd one out? (a) a toy parachute (b) an open sheet of paper (c) a feather (d) a stone
7. 7.⚖️ 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 cling film cover (b) sun or shade (c) how many drops form (d) the time we wait
8. 8.🔍 Which is the odd one out? (a) honey (b) air (c) a glass marble (d) very salty water
9. 9.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
10. 10.True or false: a glass marble falls slowly through the air. (a) False (b) True
11. 11.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
12. 12.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains
13. 13.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
14. 14.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a piece of chalk (b) a glass marble (c) a cotton thread (d) a flower stem
16. 16.True or false: a small cup is needed for the water cycle bowl. (a) False (b) True
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a glass of water (d) yeast
18. 18.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
19. 19.True or false: yeast is not needed for the water rainbow. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) air (b) cooking oil (c) a cork (d) honey
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a towel (d) a magnet
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the amount of water (b) brightness of rainbow (c) the time of day (d) the same white paper
23. 23.🔍 Which is the odd one out? (a) a cork (b) a feather (c) an iron nail (d) a dry leaf
24. 24.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is heavy (c) hot water is magnetic (d) hot water can scald
25. 25.True or false: a mirror is needed for the water rainbow. (a) False (b) True
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a mirror (d) a results table
27. 27.🔍 Which is the odd one out? (a) a glass marble (b) a crumpled paper ball (c) a feather (d) a stone
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) how much of each liquid (c) the order of pouring (d) the order of the layers
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same card (b) the way we turn it (c) the same glass (d) how full the glass is
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a sink or a bucket (d) a magnet
31. 31.💧 Which change is this: butter going runny? (a) melting (b) freezing (c) evaporation (d) condensation
32. 32.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it turns into a kite (c) it goes much farther (d) it goes less far
33. 33.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a mirror (c) a paper clip (d) a ruler
34. 34.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) yeast (d) turmeric powder
36. 36.🛟 Which of these sinks in water? (a) a steel spoon (b) an empty capped bottle (c) a dry leaf (d) a feather
37. 37.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
38. 38.🥄 Which of these dissolves in water? (a) sand (b) chalk powder (c) small pebbles (d) table salt
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
40. 40.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed

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