Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 134 · 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 backward? (a) the swimmer (b) the balloon (c) gas from the rocket (d) the rowing boat
2. 2.True or false: safety scissors is needed for the paper helicopter. (a) True (b) False
3. 3.🌈 In VIBGYOR, what number colour is green?
4. 4.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
5. 5.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) food colour (d) cooking oil
7. 7.🍯 Which of these is less dense than water? (a) a pebble (b) honey (c) air (d) a coin
8. 8.🧺 Do we need a balloon for the paper helicopter? (a) needed (b) not needed
9. 9.True or false: a magnet is needed for the water rainbow. (a) False (b) True
10. 10.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
11. 11.True or false: food colour dissolves in water. (a) False (b) True
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
13. 13.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) small test objects (c) a tub of water (d) a results table
14. 14.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the paper clip (b) the length of the blades (c) time to reach the floor (d) the drop height
16. 16.🔍 Which is the odd one out? (a) sweat drying on skin (b) drops under a pot lid (c) wet clothes drying (d) wet hair drying
17. 17.True or false: drops on a cold glass is condensation. (a) False (b) True
18. 18.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
19. 19.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
20. 20.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) do not lick the spoon (c) throw the glass (d) taste each layer
21. 21.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it goes less far (d) it flies off the string
22. 22.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the drop height (b) the person dropping (c) the length of the blades (d) the kind of paper
25. 25.True or false: the balloon goes forward. (a) False (b) True
26. 26.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a mirror (c) two clear glasses (d) a clock or timer
27. 27.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
30. 30.True or false: powdered sugar dissolves faster. (a) False (b) True
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a balloon
32. 32.⚖️ 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 keep it the same (b) we change it (c) we measure it
33. 33.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
34. 34.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) cold water (c) sugar (d) a clock or timer
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a balloon
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sunny window (c) bright sunlight (d) a clear glass of water
37. 37.🔍 Which is the odd one out? (a) a cork (b) a glass marble (c) an ice cube (d) cooking oil
38. 38.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) in the water layer (c) at the very bottom (d) on top of the oil
39. 39.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False

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