Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 398 · 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) a mirror (b) a comb (c) a balloon (d) cold water
2. 2.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) on top of the oil (c) at the very bottom (d) in the oil layer
3. 3.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) magnetism (d) air pressure
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
5. 5.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a magnet (c) a paper clip (d) a strip of paper
6. 6.🔍 Which is the odd one out? (a) a pebble (b) an ice cube (c) a coin (d) a steel spoon
7. 7.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) neither of them (c) the crumpled ball (d) the flat sheet
8. 8.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
9. 9.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) time to reach the floor (c) the kind of paper (d) the length of the blades
11. 11.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) some stays undissolved (c) the sugar turns to salt (d) the water turns solid
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) a magnet (d) warm water
14. 14.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
15. 15.🧺 Which of these is needed for the density tower? (a) a spoon (b) yeast (c) a magnet (d) a battery cell
16. 16.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
17. 17.🚁 Which of these falls fast through the air? (a) a feather (b) a glass marble (c) an open sheet of paper (d) a toy parachute
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) False (b) True
19. 19.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
20. 20.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a clock or timer (c) a comb (d) cold water
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a battery cell (d) yeast
22. 22.True or false: air from the balloon goes backward. (a) True (b) False
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is what we measure. (a) True (b) False
24. 24.🛟 Which of these sinks in water? (a) a steel spoon (b) a piece of thermocol (c) an ice-cream stick (d) a dry leaf
25. 25.⚖️ 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 same white paper (b) the time of day (c) the same glass (d) the amount of water
26. 26.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the amount of sugar (c) time to dissolve (d) the water temperature
28. 28.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
30. 30.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is what we measure. (a) True (b) False
31. 31.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) yeast (c) safety scissors (d) a pencil
32. 32.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a fridge magnet (c) a sundial (d) a mirror
36. 36.True or false: a strip of cloth does not let water climb. (a) False (b) True
37. 37.🧺 Which of these is needed for the density tower? (a) a mirror (b) a battery cell (c) yeast (d) a tall clear glass
38. 38.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) sunshine (b) wind (c) rain (d) lightning
39. 39.True or false: a plastic ruler lets water climb up it. (a) True (b) False
40. 40.🚁 Which of these falls slowly through the air? (a) a paper helicopter (b) a steel spoon (c) a stone (d) a glass marble

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