Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 246 · 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.⚖️ 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 change it (b) we keep it the same (c) we measure it
2. 2.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.True or false: a paper helicopter falls slowly through the air. (a) True (b) False
6. 6.True or false: a metal key sinks in water. (a) True (b) False
7. 7.True or false: a stone falls fast through the air. (a) False (b) True
8. 8.⚖️ 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 what we measure. (a) False (b) True
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a white flower (d) food colour
10. 10.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
11. 11.True or false: a big sugar cube dissolves slower. (a) False (b) True
12. 12.🔮 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 less far (d) it goes much farther
13. 13.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it settles at the bottom (d) it dissolves
14. 14.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.True or false: the swimmer goes backward. (a) True (b) False
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) the amount of sugar (c) time to dissolve (d) the amount of water
17. 17.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls fast (b) falls slowly
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the paper clip (b) the person dropping (c) the kind of paper (d) time to reach the floor
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a flower stem
21. 21.True or false: a spoon is needed for the density tower. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a metal key (b) a coin (c) a steel spoon (d) a dry leaf
23. 23.💧 Which of these is freezing? (a) ice becoming water (b) snow turning to water (c) drops on a cold glass (d) making ice lollies
24. 24.True or false: cooking oil is needed for the density tower. (a) False (b) True
25. 25.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
26. 26.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
27. 27.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
28. 28.⚖️ 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 amount of clay (b) whether it floats (c) the shape of the clay (d) the tub of water
29. 29.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
30. 30.🧺 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) small test objects (d) a battery cell
31. 31.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) a balloon (c) cold water (d) a teaspoon
32. 32.⚖️ 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 order of pouring”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.💧 Which of these lets water climb up it? (a) a piece of foil (b) a paper towel (c) a rubber eraser (d) a plastic ruler
34. 34.⚖️ 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 change it (b) we measure it (c) we keep it the same
35. 35.True or false: a piece of chalk lets water climb up it. (a) False (b) True
36. 36.True or false: a dry leaf sinks in water. (a) False (b) True
37. 37.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
38. 38.True or false: the swimmer goes forward. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a magnetic pin holder (d) a vacuum cleaner
40. 40.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) faster (b) they never dry (c) slower (d) they turn to ice

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