Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 570 · 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.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.🔍 Which is the odd one out? (a) very salty water (b) a coin (c) a ping-pong ball (d) honey
3. 3.💧 Which of these is evaporation? (a) a misty bathroom mirror (b) a puddle drying up (c) snow turning to water (d) ice becoming water
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) a long string (d) yeast
5. 5.⚖️ 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 same glass (c) the way we turn it (d) how full the glass is
6. 6.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a mirror (c) a magnet (d) a paper clip
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) turmeric powder (d) a clear glass of water
8. 8.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
9. 9.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) its hollow shape (d) it has a magnet
10. 10.True or false: sugar stirred well dissolves faster. (a) True (b) False
11. 11.⚖️ 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 glass is the one thing we change. (a) False (b) True
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the slope of the string (c) distance it travels (d) how big we blow it
13. 13.🔍 Which is the odd one out? (a) a metal key (b) a dry leaf (c) a pebble (d) a coin
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) cold water (d) a comb
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
18. 18.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) air pushing up (d) the cold water
19. 19.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water
20. 20.True or false: a magnet is needed for the water rainbow. (a) False (b) True
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a balloon (d) small test objects
22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a balloon (c) a teaspoon (d) two clear glasses
23. 23.⚖️ 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 keep it the same (b) we measure it (c) we change it
24. 24.⚖️ 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 change it (c) we measure it
25. 25.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) a big bowl (c) sunlight (d) a mirror
26. 26.🔮 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
27. 27.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
28. 28.🌈 How many colours do we name in a rainbow (VIBGYOR)?
29. 29.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they turn to honey (c) they mix for ever (d) they separate again
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a magnet (c) a results table (d) a battery cell
31. 31.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) no change at all (d) less friction
32. 32.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) wet hair drying (b) a puddle drying up (c) wet clothes drying (d) drops under a pot lid
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
35. 35.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a sunny window
38. 38.🛟 Does a feather float or sink in water? (a) floats (b) sinks
39. 39.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
40. 40.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed

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