Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 708 · 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 goes backward? (a) the rocket (b) air from the balloon (c) the rowing boat (d) the swimmer
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a mirror
3. 3.True or false: a magnet is not needed for the water cycle bowl. (a) False (b) True
4. 4.True or false: sugar left unstirred dissolves faster. (a) True (b) False
5. 5.True or false: ice cubes is needed for the water cycle bowl. (a) False (b) True
6. 6.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a sink or bucket (d) over a laptop
7. 7.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) honey (c) a mirror (d) cooking oil
8. 8.🍯 Which of these is less dense than water? (a) honey (b) a pebble (c) very salty water (d) air
9. 9.⚖️ 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 measure it (b) we keep it the same (c) we change it
10. 10.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a pencil (c) a battery cell (d) a strip of paper
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
12. 12.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar left unstirred (d) sugar stirred well
13. 13.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) slide on them (c) leave them wet (d) pour more water
14. 14.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
15. 15.🛟 Which of these floats on water? (a) an iron nail (b) a glass marble (c) a coin (d) an ice cube
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) a few hours of waiting (d) food colour
17. 17.🔍 Which is the odd one out? (a) cooking oil (b) a glass marble (c) air (d) a cork
18. 18.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) False (b) True
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) False (b) True
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a magnet (c) a clear glass of water (d) bright sunlight
23. 23.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) leave water on the floor (d) run around the tub
24. 24.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a cotton thread
25. 25.⚖️ 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 order of the layers (b) the same glass (c) the same three liquids (d) the order of pouring
26. 26.🔍 Which is the odd one out? (a) drops on a cold glass (b) making ice lollies (c) dew on morning grass (d) a misty bathroom mirror
27. 27.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it sinks (c) it still floats (d) it dissolves
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is what we measure. (a) True (b) False
29. 29.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) cooking oil (b) a coin (c) a glass marble (d) very salty water
31. 31.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
32. 32.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.⚖️ 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) the same glass (c) brightness of rainbow
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the tub of water (b) the shape of the clay (c) the amount of clay (d) whether it floats
35. 35.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a toy parachute (b) a crumpled paper ball (c) a glass marble (d) a steel spoon
37. 37.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) no change at all (c) it goes faster (d) less friction
38. 38.True or false: yeast is needed for the density tower. (a) True (b) False
39. 39.True or false: a steel spoon falls slowly through the air. (a) True (b) False
40. 40.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed

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