Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 568 · 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 a mirror for the coloured flower experiment? (a) not needed (b) needed
2. 2.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
3. 3.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) False (b) True
5. 5.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
6. 6.⚖️ 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 keep it the same (b) we measure it (c) we change it
7. 7.True or false: safety scissors is not needed for the paper helicopter. (a) False (b) True
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a magnet (d) a clear glass of water
9. 9.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) the time of day (c) brightness of rainbow
11. 11.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) a magnet (d) two chairs
12. 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) sticky tape (c) two chairs (d) a long string
13. 13.True or false: water a swimmer pushes goes forward. (a) True (b) False
14. 14.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a ruler (c) yeast (d) a strip of paper
15. 15.🔍 Which is the odd one out? (a) a ping-pong ball (b) an ice-cream stick (c) a piece of thermocol (d) a ball of clay
16. 16.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a medicine dropper (d) a fridge magnet
17. 17.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
18. 18.🧺 Do we need water for the water cycle bowl? (a) not needed (b) needed
19. 19.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the same string (c) the same tape (d) how big we blow it
21. 21.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) throw the glass (d) pour it on the floor
22. 22.🔍 Which is the odd one out? (a) wet hair drying (b) sweat drying on skin (c) a puddle drying up (d) making ice lollies
23. 23.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
25. 25.True or false: a suction hook works by magnetism. (a) True (b) False
26. 26.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it stops in the air (c) it floats up (d) faster
27. 27.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a strip of paper (c) safety scissors (d) a balloon
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) True (b) False
29. 29.⚖️ 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 size of the bowl (b) the time we wait (c) sun or shade (d) the cling film cover
30. 30.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
31. 31.🛟 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 win a prize (d) to hide the corks
32. 32.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) time to reach the floor (b) the kind of paper (c) the length of the blades (d) the paper clip
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
35. 35.True or false: a balloon is needed for the density tower. (a) False (b) True
36. 36.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a balloon (c) a battery cell (d) a small cup
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the amount of clay (c) the shape of the clay
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) safety scissors (c) a ruler (d) a strip of paper
39. 39.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sunny window (c) yeast (d) a balloon

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