Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 412 · 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.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) the rocket (d) water from the oars
2. 2.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) some water evaporates (c) the water increases (d) it turns to ice
3. 3.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they turn two colours (d) they all turn green
4. 4.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
5. 5.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
6. 6.🚀 Which of these goes forward? (a) the balloon (b) gas from the rocket (c) water from the oars (d) air from the balloon
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.True or false: glucose powder dissolves in water. (a) False (b) True
9. 9.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is what we measure. (a) False (b) True
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a sunny window (d) bright sunlight
12. 12.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is the coldest (c) it is the densest (d) it is yellow
13. 13.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) the spoon (c) honey (d) cooking oil
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a towel for spills (d) yeast
15. 15.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the amount of clay (c) whether it floats
17. 17.🍯 Which of these is less dense than water? (a) a coin (b) honey (c) an ice cube (d) a glass marble
18. 18.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) safety scissors (c) a pencil (d) a balloon
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 measure it (b) we change it (c) we keep it the same
20. 20.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
21. 21.True or false: yeast is needed for the paper helicopter. (a) True (b) False
22. 22.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
24. 24.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
25. 25.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
26. 26.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) lightning (c) sunshine (d) rain
27. 27.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
28. 28.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) sugar stirred well (d) a big sugar cube
29. 29.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
30. 30.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) False (b) True
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) True (b) False
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a balloon
34. 34.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) a paper cutter (d) gardening shears
35. 35.🌼 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
36. 36.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a magnet (c) sugar (d) warm water
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a magnet (c) a long string (d) sticky tape
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is what we measure. (a) False (b) True
39. 39.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) stare at the Sun (d) look at it in a mirror
40. 40.True or false: sugar left unstirred dissolves faster. (a) True (b) False

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