Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 764 · 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: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) cold water (c) a clock or timer (d) a teaspoon
3. 3.⚖️ 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 change it (c) we measure it
4. 4.True or false: a drinking straw works by magnetism. (a) True (b) False
5. 5.🧺 Which of these is not needed for the density tower? (a) yeast (b) honey (c) cooking oil (d) water with food colour
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
8. 8.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it dissolves (d) it turns to stone
9. 9.True or false: water with food colour is not needed for the density tower. (a) True (b) False
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
12. 12.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
13. 13.⚖️ 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 room it stands in (b) the amount of colour (c) time for colour to show (d) the kind of flower
14. 14.True or false: a comb is not needed for the dissolving test. (a) True (b) False
15. 15.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
16. 16.⚖️ 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 time of day (b) the same glass (c) the amount of water (d) the same white paper
17. 17.True or false: a rubber eraser lets water climb up it. (a) True (b) False
18. 18.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a battery cell (b) water with food colour (c) a spoon (d) a tall clear glass
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
20. 20.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic chess set (c) a vacuum cleaner (d) a drinking straw
21. 21.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the length of the stem (b) time for colour to show (c) the amount of colour (d) the kind of flower
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
25. 25.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a flower stem
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) True (b) False
27. 27.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) safety scissors (c) a pencil (d) a magnet
28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) a towel for spills (c) a tub of water (d) a results table
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the kind of clay (c) the shape of the clay
30. 30.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
31. 31.True or false: a crumpled paper ball falls fast through the air. (a) True (b) False
32. 32.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) sticky tape (c) yeast (d) a battery cell
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a medicine dropper (d) a magnetic chess set
36. 36.🧺 Do we need yeast for the paper helicopter? (a) not needed (b) needed
37. 37.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a few hours of waiting (d) turmeric powder
40. 40.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False

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