Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 533 · 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: snow turning to water is melting. (a) False (b) True
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) yeast
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a balloon (d) a battery cell
4. 4.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it goes much farther (c) it flies off the string (d) it turns into a kite
5. 5.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) the same (d) slower
6. 6.True or false: sawdust dissolves in water. (a) False (b) True
7. 7.🛟 Does a cork float or sink in water? (a) sinks (b) floats
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
10. 10.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a wobbly chair (c) a roof edge (d) from your raised hand
12. 12.⚖️ 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) the tub of water (c) the amount of clay (d) the shape of the clay
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a mirror
15. 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a balloon (d) a magnet
16. 16.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it gets too heavy (c) it turns into a kite (d) it can pop loudly
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a stiff postcard (d) a towel
18. 18.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is magnetic (c) hot water is heavy (d) hot water can scald
19. 19.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) smell it closely (d) poke it with a finger
20. 20.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
21. 21.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
22. 22.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
24. 24.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.True or false: turmeric powder is needed for the density tower. (a) True (b) False
28. 28.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sunny window (c) a mirror (d) yeast
29. 29.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) pour it on the floor (d) throw the glass
30. 30.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to keep children safe (d) to splash everyone
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is what we measure. (a) True (b) False
32. 32.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
33. 33.True or false: a plastic ruler lets water climb up it. (a) True (b) False
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a stiff postcard (d) a glass of water
35. 35.True or false: a paper towel does not let water climb. (a) True (b) False
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) a balloon (d) yeast
37. 37.True or false: a mirror is not needed for the dissolving test. (a) True (b) False
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) False (b) True
39. 39.True or false: yeast is not needed for the water rainbow. (a) True (b) False
40. 40.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we change it (c) we measure it

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