Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 361 · 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.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it stays still in air (c) it flies upward (d) it spins round
2. 2.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) False (b) True
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) two clear glasses (c) a comb (d) sugar
5. 5.True or false: snow turning to water is melting. (a) False (b) True
6. 6.💧 Which of these is condensation? (a) a puddle drying up (b) wet clothes drying (c) drops on a cold glass (d) sweat drying on skin
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) False (b) True
8. 8.🌼 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
9. 9.📘 What pulls the paper helicopter down to the floor? (a) magnetism (b) gravity (c) the wind (d) air pressure
10. 10.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) a shadow of ice (d) snow falling
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
13. 13.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) poke it with a finger (d) look for leftover grains
14. 14.🍯 Which of these is denser than water? (a) a ping-pong ball (b) honey (c) an ice cube (d) air
15. 15.💧 In the covered bowl, where does the water vapour come from? (a) the air outside (b) the cling film (c) water warmed by the Sun (d) the bowl itself
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a battery cell (d) small test objects
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a magnet (d) a sink or a bucket
18. 18.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) more friction, less far (c) no change at all (d) less friction
19. 19.⚖️ 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 pouring”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) yeast
21. 21.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) warm water (c) a magnet (d) honey
22. 22.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) some stays undissolved (c) all of it dissolves (d) the sugar turns to salt
23. 23.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) sticky tape (c) a mirror (d) two chairs
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) bright sunlight (c) a sunny window (d) a sheet of white paper
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) yeast (d) a stiff postcard
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a towel for spills (c) small test objects (d) a tub of water
27. 27.🧺 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) turmeric powder (d) a towel for spills
28. 28.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) the crumpled ball (c) the flat sheet (d) a sheet of glass
29. 29.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a drinking straw (c) a magnet (d) a long string
30. 30.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
31. 31.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
32. 32.True or false: water with food colour is not needed for the density tower. (a) True (b) False
33. 33.True or false: a feather falls slowly through the air. (a) False (b) True
34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.🛟 Which of these floats on water? (a) a piece of thermocol (b) a metal key (c) an iron nail (d) a steel spoon
37. 37.⚖️ 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 keep it the same (c) we change it
38. 38.True or false: honey is needed for the density tower. (a) False (b) True
39. 39.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it does not fall (c) it turns blue (d) it falls upward
40. 40.⚖️ 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 glass is kept the same. (a) True (b) False

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