Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 141 · 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.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
3. 3.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it spins the other way (c) it does not fall (d) it turns blue
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) vinegar (d) two chairs
5. 5.⚖️ 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 amount of clay (c) the shape of the clay (d) the tub of water
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) whether it floats (c) the shape of the clay (d) the amount of clay
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
8. 8.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) do not lick the spoon (d) pour it on the floor
9. 9.True or false: a steel spoon falls fast through the air. (a) False (b) True
10. 10.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the kind of flower
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) yeast (c) a tub of water (d) a results table
13. 13.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Do we need turmeric powder for the water cycle bowl? (a) not needed (b) needed
15. 15.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) a small cup (c) a magnet (d) sunlight
16. 16.True or false: sawdust dissolves in water. (a) False (b) True
17. 17.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same card (b) how full the glass is (c) whether the card stays
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is kept the same. (a) True (b) False
20. 20.🧺 Which of these is needed for the dissolving test? (a) sugar (b) honey (c) a magnet (d) cotton wool
21. 21.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
22. 22.💧 Which change is this: making ice lollies? (a) melting (b) freezing (c) evaporation (d) condensation
23. 23.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a ruler (c) a pencil (d) a magnet
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) turmeric powder
25. 25.⚖️ 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 keep it the same (c) we measure it
26. 26.True or false: a ping-pong ball is denser than water. (a) False (b) True
27. 27.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a magnet (d) a tall clear glass
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the amount of sugar (c) the kind of sugar (d) the water temperature
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the amount of water (b) the same glass (c) the same white paper (d) the same window
32. 32.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
33. 33.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) safety scissors (c) turmeric powder (d) a balloon
34. 34.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
35. 35.True or false: a ping-pong ball floats on water. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a cork (b) an ice-cream stick (c) a dry leaf (d) a coin
37. 37.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
38. 38.🧺 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
39. 39.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the water turns to ice (d) the glass breaks
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we change it (b) we keep it the same (c) we measure it

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