Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 326 · 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 tub of water for the float-or-sink test? (a) not needed (b) needed
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) yeast (c) two chairs (d) a long string
4. 4.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) play near a deep pond (d) run around the tub
5. 5.True or false: a pebble is less dense than water. (a) True (b) False
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
7. 7.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a strip of paper (c) a balloon (d) a magnet
8. 8.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.💧 Which of these is freezing? (a) drops on a cold glass (b) water becoming ice (c) butter going runny (d) dew on morning grass
10. 10.🌈 In VIBGYOR, what number colour is indigo?
11. 11.🔍 Which is the odd one out? (a) butter going runny (b) snow turning to water (c) ice becoming water (d) water becoming ice
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) brightness of rainbow (b) the same white paper (c) the same glass (d) the amount of water
14. 14.🌈 In VIBGYOR, what number colour is red?
15. 15.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it can pop loudly (d) it gets too heavy
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
18. 18.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
19. 19.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) a stone (c) a paper helicopter (d) a coin
24. 24.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) small test objects (d) a results table
25. 25.⚖️ 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) False (b) True
26. 26.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) it never stops (d) when it turns blue
27. 27.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.True or false: a paper towel lets water climb up it. (a) True (b) False
30. 30.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a magnet (c) a long string (d) two chairs
33. 33.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) the glass gets hot (c) three separate layers (d) bubbles of gas
34. 34.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) slower (c) faster (d) they turn to ice
35. 35.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a sunny window (d) a sheet of white paper
36. 36.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
40. 40.True or false: a strip of cloth does not let water climb. (a) False (b) True

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