Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 942 · 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.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) honey (d) a balloon
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the cling film cover (b) sun or shade (c) how many drops form (d) the amount of water
3. 3.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
5. 5.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) air (d) very salty water
6. 6.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the kind of clay (c) whether it floats
8. 8.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a ruler (c) a pencil (d) turmeric powder
9. 9.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) honey (c) coloured water (d) the spoon
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🔍 Which is the odd one out? (a) a steel spoon (b) a stone (c) a glass marble (d) a feather
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 keep it the same (b) we measure it (c) we change it
13. 13.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) a mirror (c) a balloon (d) ice cubes
14. 14.True or false: ice becoming water is melting. (a) False (b) True
15. 15.True or false: an open sheet of paper falls slowly through the air. (a) False (b) True
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) True (b) False
17. 17.🛟 Which of these floats on water? (a) an iron nail (b) a coin (c) a glass marble (d) an ice cube
18. 18.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
19. 19.🌈 In VIBGYOR, what number colour is yellow?
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) the slope of the string (c) the same tape (d) distance it travels
21. 21.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
22. 22.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) a mirror (d) two chairs
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
24. 24.🛟 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
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) yeast (d) a glass of water
26. 26.⚖️ 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 same white paper (b) brightness of rainbow (c) the amount of water
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) not at all (c) the same (d) faster
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same glass
30. 30.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
31. 31.⚖️ 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
32. 32.True or false: the rocket goes backward. (a) True (b) False
33. 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) cold water (c) a teaspoon (d) a mirror
34. 34.True or false: a steel spoon does not let water climb. (a) True (b) False
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a sunny window (d) a clear glass of water
37. 37.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a magnetic chess set (d) a drinking straw
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.True or false: a pencil is not needed for the paper helicopter. (a) False (b) True
40. 40.True or false: sunlight is not needed for the water cycle bowl. (a) True (b) False

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