Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 468 · 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.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it settles at the bottom (c) it turns blue (d) it dissolves
2. 2.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) powdered sugar (d) both the same
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
4. 4.True or false: a comb is needed for the dissolving test. (a) True (b) False
5. 5.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a clear glass of water (d) bright sunlight
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) yeast (d) a tub of water
8. 8.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
9. 9.⚖️ 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
10. 10.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) gardening shears (d) sharp kitchen shears
11. 11.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
12. 12.🌈 In VIBGYOR, what number colour is orange?
13. 13.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) a puddle drying up (b) making ice lollies (c) wet clothes drying (d) sweat drying on skin
15. 15.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a glass of water
17. 17.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
18. 18.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
20. 20.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a wobbly chair (c) from your raised hand (d) a high window ledge
21. 21.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.True or false: a coin falls fast through the air. (a) False (b) True
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.True or false: a fluff of cotton falls slowly through the air. (a) True (b) False
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) True (b) False
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) how many drops form (c) the time we wait
27. 27.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) a towel for spills (d) a tub of water
29. 29.True or false: a paper clip is needed for the paper helicopter. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) cooking oil (d) chalk powder
31. 31.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) food colour (d) cooking oil
32. 32.⚖️ 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 the layers”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
35. 35.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it turns blue (d) so it gets hot
37. 37.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) safety scissors (c) yeast (d) a strip of paper
38. 38.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the tub (d) the water
39. 39.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a fridge magnet (d) a medicine dropper
40. 40.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is yellow (c) it is the stickiest (d) it is the densest

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