Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 327 · 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 is the odd one out? (a) a ping-pong ball (b) honey (c) a coin (d) very salty water
2. 2.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
5. 5.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
6. 6.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
7. 7.🔍 Which is the odd one out? (a) a coin (b) a cork (c) a ping-pong ball (d) cooking oil
8. 8.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cold water (c) a comb (d) sugar
9. 9.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
10. 10.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
11. 11.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
12. 12.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) a sheet of glass (c) the crumpled ball (d) neither of them
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) sugar (c) warm water (d) honey
15. 15.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
16. 16.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) turmeric powder (d) a few hours of waiting
18. 18.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a results table (d) a towel for spills
19. 19.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) yeast (c) a tub of water (d) small test objects
21. 21.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
22. 22.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) water (c) a magnet (d) a mirror
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) the amount of colour (b) time for colour to show (c) the length of the stem
24. 24.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
25. 25.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) safety scissors (c) a ruler (d) a pencil
26. 26.🎈 When does the balloon rocket stop? (a) it never stops (b) when the air runs out (c) when it gets cold (d) when it turns blue
27. 27.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
28. 28.🛟 Which of these floats on water? (a) a cork (b) a steel spoon (c) a pebble (d) an iron nail
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it guides the balloon (d) it makes it heavier
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) time for colour to show (c) the room it stands in (d) the kind of flower
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) a clock or timer (d) a magnet
33. 33.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
35. 35.🌈 In VIBGYOR, what number colour is indigo?
36. 36.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🍯 Which of these is denser than water? (a) an ice cube (b) cooking oil (c) a pebble (d) air
39. 39.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
40. 40.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) the water turns red (c) fewer drops form (d) the bowl freezes

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