Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 76 · 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.⚖️ 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 the one thing we change. (a) True (b) False
2. 2.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a fridge magnet (d) a balloon rocket
3. 3.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar left unstirred (c) powdered sugar (d) sugar in warm water
4. 4.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a mirror (d) a clear glass of water
6. 6.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) a battery cell (d) yeast
7. 7.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
8. 8.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) sugar (c) a clock or timer (d) a teaspoon
10. 10.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a shadow of ice (d) a magnet
11. 11.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.⚖️ 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
14. 14.⚖️ 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 the one thing we change. (a) False (b) True
15. 15.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a battery cell (d) a results table
17. 17.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
18. 18.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same glass (b) the same three liquids (c) the order of pouring (d) the order of the layers
19. 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) two chairs (c) a drinking straw (d) a balloon
20. 20.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
21. 21.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) a paper cutter (c) safety scissors (d) sharp kitchen shears
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
23. 23.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) at the very bottom (c) in the oil layer (d) in the water layer
24. 24.True or false: a magnet is not needed for the dissolving test. (a) False (b) True
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) a tall clear glass (c) honey (d) water with food colour
26. 26.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) honey (d) a mirror
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a white flower (d) a mirror
28. 28.True or false: a strip of paper is not needed for the paper helicopter. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a compass needle (d) a suction hook
30. 30.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a paper clip (c) a magnet (d) a strip of paper
31. 31.🌈 In VIBGYOR, what number colour is blue?
32. 32.🔍 Which is the odd one out? (a) an empty capped bottle (b) a glass marble (c) an ice-cream stick (d) a dry leaf
33. 33.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a piece of chalk (d) a plastic ruler
34. 34.True or false: gas from the rocket goes forward. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of foil (c) a rubber eraser (d) a glass marble
36. 36.True or false: baking soda does not dissolve in water. (a) True (b) False
37. 37.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) blue (d) green
38. 38.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
39. 39.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
40. 40.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False

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