Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 379 · 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.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) yeast (c) a paper clip (d) a strip of paper
2. 2.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it turns blue (c) it melts (d) it floats higher
3. 3.True or false: a pencil is not needed for the paper helicopter. (a) True (b) False
4. 4.True or false: sunlight is needed for the water cycle bowl. (a) False (b) True
5. 5.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it guides the balloon (c) it blows air in (d) it holds water
6. 6.True or false: turmeric powder is needed for the paper helicopter. (a) True (b) False
7. 7.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
8. 8.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
9. 9.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
10. 10.True or false: a glass marble is denser than water. (a) False (b) True
11. 11.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the tub of water (c) the amount of clay (d) whether it floats
13. 13.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) aim it at your friend (d) blow it till it bursts
14. 14.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) safety scissors (c) a strip of paper (d) a magnet
15. 15.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) whether the card stays (b) the same glass (c) the way we turn it (d) how full the glass is
17. 17.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
19. 19.📘 What is the push of air on a falling thing called? (a) dissolving (b) floating (c) air resistance (d) magnetism
20. 20.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
21. 21.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
22. 22.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) yeast (c) water with food colour (d) a tall clear glass
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the same glass
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the amount of water (c) the same white paper (d) the same glass
28. 28.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: a balloon is needed for the balloon rocket. (a) True (b) False
31. 31.True or false: the rocket goes backward. (a) False (b) True
32. 32.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) a strip of paper (c) safety scissors (d) a pencil
33. 33.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
35. 35.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the drop height (b) time to reach the floor (c) the length of the blades
37. 37.🧺 Which of these is needed for the density tower? (a) a balloon (b) a tall clear glass (c) a mirror (d) a battery cell
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of water (c) the stirring (d) the kind of sugar
39. 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) a mirror (d) sticky tape
40. 40.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a steel spoon (d) a cotton thread

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