Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 934 · 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.True or false: sugar dissolves in water. (a) True (b) False
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a balloon (c) a ruler (d) a paper clip
3. 3.⚖️ 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) False (b) True
4. 4.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) True (b) False
7. 7.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) the floor pushes it (c) air pushes on its blades (d) it has no weight
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
9. 9.⚖️ 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) the amount of water (b) the same glass (c) the same window (d) brightness of rainbow
10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
12. 12.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
13. 13.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
14. 14.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) food colour (d) cooking oil
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) False (b) True
16. 16.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) a tall clear glass (c) water with food colour (d) cooking oil
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
18. 18.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) a high window ledge (c) from your raised hand (d) a roof edge
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) yeast (d) small test objects
22. 22.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it magnetic (b) to stop the spinning (c) to weigh down the bottom (d) to make it fall slower
23. 23.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
24. 24.True or false: sunlight is not needed for the water cycle bowl. (a) True (b) False
25. 25.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
26. 26.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
27. 27.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a sunny window (d) a battery cell
28. 28.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) the slope of the string (c) the same straw (d) distance it travels
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
31. 31.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.🌈 How many colours do we name in a rainbow (VIBGYOR)?
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) two chairs (d) a battery cell
35. 35.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) powdered sugar
36. 36.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
37. 37.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.⚖️ 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
39. 39.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) at the very bottom (b) in the water layer (c) on top of the oil (d) in the oil layer
40. 40.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False

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