Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 595 · 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: a clock or timer is needed for the dissolving test. (a) False (b) True
2. 2.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) its hollow shape (c) it has a magnet (d) steel is very light
3. 3.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) under the honey (c) in the water layer (d) on top of the oil
4. 4.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a mirror (c) a pencil (d) a ruler
5. 5.True or false: a cotton thread does not let water climb. (a) False (b) True
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) False (b) True
7. 7.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.📘 What pulls the paper helicopter down to the floor? (a) the wind (b) gravity (c) air pressure (d) magnetism
9. 9.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.🔍 Which is the odd one out? (a) a pond icing over (b) snow turning to water (c) water becoming ice (d) making ice lollies
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same glass
12. 12.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it still floats (d) it turns white
15. 15.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a battery cell (d) a glass of water
17. 17.💧 Which of these lets water climb up it? (a) a flower stem (b) a piece of foil (c) a plastic ruler (d) a glass marble
18. 18.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to hide the corks (d) to splash everyone
19. 19.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
20. 20.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil turns into honey (d) oil makes it rain
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a towel for spills (c) small test objects (d) a tub of water
22. 22.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) the order of pouring (c) the same glass (d) the order of the layers
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.True or false: a comb is needed for the dissolving test. (a) True (b) False
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) False (b) True
27. 27.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a magnet (c) yeast (d) water with food colour
28. 28.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
29. 29.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
30. 30.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it goes backward first (c) it speeds up (d) it travels farther
31. 31.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it dissolves (d) it can float
32. 32.True or false: the swimmer goes forward. (a) True (b) False
33. 33.🔮 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) in the oil layer (d) on top of the oil
34. 34.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
35. 35.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls slowly (b) falls fast
36. 36.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a sunny window (d) a balloon
37. 37.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a mirror (d) a glass of water
39. 39.True or false: a mirror is not needed for the density tower. (a) True (b) False
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False

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