Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 968 · 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 is water vapour? (a) tiny ice cubes (b) a kind of smoke (c) salty water (d) water as a gas
2. 2.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
5. 5.True or false: a plastic ruler lets water climb up it. (a) False (b) True
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
8. 8.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a balloon (c) cold water (d) a teaspoon
10. 10.True or false: an open sheet of paper falls slowly through the air. (a) True (b) False
11. 11.🔮 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 turn two colours (c) they stay white (d) they all turn green
12. 12.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is magnetic (d) ice is very cold
13. 13.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
14. 14.True or false: a magnet is needed for the density tower. (a) True (b) False
15. 15.True or false: a fluff of cotton falls fast through the air. (a) True (b) False
16. 16.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they turn to ice (c) they never dry (d) faster
17. 17.True or false: a mirror is needed for the water rainbow. (a) False (b) True
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) from your raised hand (c) a high window ledge (d) a roof edge
20. 20.True or false: a comb is not needed for the dissolving test. (a) True (b) False
21. 21.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) more drops form (c) fewer drops form (d) the water turns red
22. 22.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
23. 23.🛟 Does a feather float or sink in water? (a) floats (b) sinks
24. 24.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a balloon
26. 26.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) cold water (c) honey (d) sugar
27. 27.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) yeast (c) a tall clear glass (d) cooking oil
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) True (b) False
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is the one thing we change. (a) False (b) True
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a magnet (c) a teaspoon (d) a clock or timer
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
33. 33.True or false: a feather falls fast through the air. (a) True (b) False
34. 34.⚖️ 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
35. 35.🚁 Which of these falls fast through the air? (a) a steel spoon (b) an open sheet of paper (c) a paper helicopter (d) a feather
36. 36.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
37. 37.True or false: sugar in warm water dissolves slower. (a) False (b) True
38. 38.⚖️ 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
39. 39.True or false: a battery cell is needed for the paper helicopter. (a) True (b) False
40. 40.🥄 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) chalk powder (d) food colour

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