Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 875 · 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.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
2. 2.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
3. 3.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
4. 4.💧 Which of these is freezing? (a) a pond icing over (b) dew on morning grass (c) a puddle drying up (d) wet clothes drying
5. 5.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) a magnet (c) cooking oil (d) water with food colour
6. 6.True or false: chalk powder does not dissolve in water. (a) False (b) True
7. 7.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.💧 Which change is this: making ice lollies? (a) evaporation (b) freezing (c) melting (d) condensation
9. 9.🛟 Which of these floats on water? (a) a dry leaf (b) a steel spoon (c) an iron nail (d) a metal key
10. 10.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a balloon (c) cling film (d) a small cup
11. 11.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
12. 12.💧 Which change is this: a pond icing over? (a) melting (b) condensation (c) freezing (d) evaporation
13. 13.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a sunny window (d) a balloon
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) time to reach the floor (c) the person dropping
17. 17.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a mirror (c) a sundial (d) a fridge magnet
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the length of the stem (c) the amount of colour (d) time for colour to show
20. 20.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) how much of each liquid (c) the order of the layers
21. 21.💧 Which change is this: wet clothes drying? (a) melting (b) freezing (c) condensation (d) evaporation
22. 22.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
23. 23.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a glass marble (c) a crumpled paper ball (d) a feather
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
25. 25.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) True (b) False
27. 27.🚀 Which of these goes forward? (a) water from the oars (b) the rocket (c) gas from the rocket (d) air from the balloon
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) the amount of colour (c) the kind of flower (d) time for colour to show
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
31. 31.🧺 Do we need cling film for the water cycle bowl? (a) not needed (b) needed
32. 32.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it goes less far (c) it flies off the string (d) it turns into a kite
33. 33.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
34. 34.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
35. 35.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
36. 36.⚖️ 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 order of pouring (b) the same three liquids (c) how much of each liquid (d) the order of the layers
37. 37.🧺 Which of these is not needed for the density tower? (a) honey (b) yeast (c) a tall clear glass (d) a spoon
38. 38.⚖️ 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
39. 39.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil makes it rain (c) oil attracts magnets (d) spilled oil is slippery
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 time we wait”? (a) we measure it (b) we keep it the same (c) we change it

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