Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 670 · 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 is the odd one out? (a) drops on a cold glass (b) a misty bathroom mirror (c) drops under a pot lid (d) snow turning to water
2. 2.⚖️ 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 the one thing we change. (a) False (b) True
3. 3.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) turmeric powder (c) small test objects (d) a towel for spills
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a mirror (d) a towel for spills
5. 5.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a battery cell (b) sunlight (c) cling film (d) ice cubes
6. 6.⚖️ 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) True (b) False
7. 7.🛟 Which of these sinks in water? (a) a steel spoon (b) an ice-cream stick (c) a dry leaf (d) an ice cube
8. 8.⚖️ 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 “how much of each liquid”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🧺 Do we need a pencil for the paper helicopter? (a) needed (b) not needed
10. 10.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) blue (c) green (d) violet
11. 11.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) red (d) yellow
12. 12.⚖️ 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 time of day (b) brightness of rainbow (c) the amount of water
13. 13.🔍 Which is the odd one out? (a) a glass marble (b) a flower stem (c) a sugar cube (d) a cotton thread
14. 14.True or false: a cork is denser than water. (a) False (b) True
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same straw (c) how big we blow it (d) the slope of the string
16. 16.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to splash everyone (d) to keep children safe
17. 17.🧺 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
18. 18.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
19. 19.🔍 Which is the odd one out? (a) cooking oil (b) a pebble (c) an ice cube (d) a cork
20. 20.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
21. 21.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
22. 22.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) honey (c) a balloon (d) yeast
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is the one thing we change. (a) False (b) True
24. 24.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a medicine dropper
25. 25.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) faster (c) not at all (d) slower
26. 26.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) let the water evaporate (c) stir it more (d) add more water
27. 27.True or false: a rubber eraser does not let water climb. (a) True (b) False
28. 28.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
29. 29.🛟 Does a cork float or sink in water? (a) sinks (b) floats
30. 30.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
31. 31.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
32. 32.True or false: a balloon is needed for the water rainbow. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) cooking oil (b) a cork (c) air (d) very salty water
34. 34.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
35. 35.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
36. 36.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) a mirror (c) sunlight (d) yeast
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) a mirror (d) two chairs
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a stiff postcard (d) a towel
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a magnet (d) a sunny window

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