Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 885 · 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 of these is needed for the dissolving test? (a) cotton wool (b) a magnet (c) cold water (d) a balloon
2. 2.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
3. 3.⚖️ 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 change it (c) we measure it
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
5. 5.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it settles at the bottom (c) it floats up (d) it turns blue
6. 6.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
7. 7.True or false: honey is not needed for the density tower. (a) True (b) False
8. 8.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) its hollow shape (c) sea water is warm (d) it has a magnet
9. 9.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) safety scissors (c) a paper clip (d) a ruler
10. 10.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they never dry (c) faster (d) they turn to ice
11. 11.⚖️ 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) the way we turn it (b) how full the glass is (c) whether the card stays
12. 12.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
13. 13.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it changes colour (d) it can pop loudly
14. 14.💧 Which of these does not let water climb? (a) a paper towel (b) a glass marble (c) a strip of cloth (d) a cotton thread
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
19. 19.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) pour more water (c) slide on them (d) wipe them dry
20. 20.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
21. 21.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
22. 22.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
23. 23.True or false: a glass marble lets water climb up it. (a) False (b) True
24. 24.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
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) how full the glass is (b) the same card (c) whether the card stays
26. 26.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a suction hook (c) a medicine dropper (d) a drinking straw
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
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 time we wait”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) how much of each liquid (c) the order of the layers
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) True (b) False
32. 32.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a compass needle (d) a drinking straw
33. 33.🥄 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) food colour (d) chalk powder
34. 34.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) yeast (d) a glass of water
36. 36.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the card stays on (d) the glass breaks
37. 37.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) True (b) False
38. 38.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the person dropping (b) the length of the blades (c) the kind of paper (d) the paper clip

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