Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 878 · 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: a comb is needed for the dissolving test. (a) True (b) False
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) how many drops form (b) sun or shade (c) the size of the bowl (d) the time we wait
3. 3.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a comb (c) a clock or timer (d) cold water
4. 4.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) throw the glass (d) do not lick the spoon
5. 5.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) yeast (d) turmeric powder
6. 6.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) sunlight (c) a balloon (d) cling film
7. 7.True or false: a battery cell is needed for the density tower. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) snow turning to water (b) ice becoming water (c) butter going runny (d) wet clothes drying
9. 9.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the paper clip (b) the length of the blades (c) time to reach the floor
12. 12.True or false: sticky tape is not needed for the balloon rocket. (a) True (b) False
13. 13.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a battery cell (d) a white flower
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a mirror (d) a balloon
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) True (b) False
17. 17.🛟 Which of these floats on water? (a) an ice cube (b) a coin (c) a pebble (d) a metal key
18. 18.True or false: a strip of cloth does not let water climb. (a) False (b) True
19. 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) yeast (d) a drinking straw
20. 20.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
21. 21.⚖️ 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 keep it the same (b) we change it (c) we measure it
22. 22.⚖️ 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 change it (b) we keep it the same (c) we measure it
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) a fluff of cotton (b) an open sheet of paper (c) a paper helicopter (d) a steel spoon
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the amount of water (b) the size of the bowl (c) the cling film cover (d) sun or shade
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) turmeric powder (d) two chairs
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.True or false: two chairs is needed for the balloon rocket. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) sweat drying on skin (b) wet clothes drying (c) a puddle drying up (d) drops under a pot lid
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the slope of the string
36. 36.⚖️ 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 way we turn it (b) how full the glass is (c) the same card (d) whether the card stays
37. 37.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is what we measure. (a) False (b) True
38. 38.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
39. 39.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a drinking straw (d) a compass needle
40. 40.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler

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