Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 45 · 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.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same white paper (c) the amount of water
3. 3.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a medicine dropper (d) a magnetic chess set
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) a big bowl (c) a balloon (d) sunlight
5. 5.True or false: a fridge magnet works by magnetism. (a) False (b) True
6. 6.True or false: sugar left unstirred dissolves faster. (a) False (b) True
7. 7.True or false: yeast is needed for the density tower. (a) False (b) True
8. 8.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a sheet of white paper (d) a balloon
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
10. 10.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) through tiny stem tubes (d) it rains on them
11. 11.True or false: a paper clip is not needed for the paper helicopter. (a) False (b) True
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) the amount of water (c) the time of day (d) brightness of rainbow
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the length of the blades (c) time to reach the floor (d) the person dropping
14. 14.🔍 Which is the odd one out? (a) air (b) an ice cube (c) a glass marble (d) a ping-pong ball
15. 15.💧 Which change is this: drops on a cold glass? (a) condensation (b) melting (c) freezing (d) evaporation
16. 16.🔍 Which is the odd one out? (a) a stone (b) a glass marble (c) a crumpled paper ball (d) a feather
17. 17.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
18. 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) vinegar (d) a long string
19. 19.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) poke it with a finger (d) taste it
20. 20.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
21. 21.🛟 Which of these floats on water? (a) a feather (b) a ball of clay (c) a pebble (d) a metal key
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) True (b) False
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sheet of white paper (c) bright sunlight (d) a sunny window
24. 24.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
25. 25.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is what we measure. (a) True (b) False
27. 27.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
28. 28.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
31. 31.True or false: a ball of clay floats on water. (a) True (b) False
32. 32.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) under the honey (c) on top of the oil (d) in the honey layer
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.True or false: cooking oil is not needed for the density tower. (a) False (b) True
35. 35.⚖️ 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 kept the same. (a) True (b) False
36. 36.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
37. 37.True or false: honey is less dense than water. (a) False (b) True
38. 38.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the kind of clay
40. 40.🧺 Which of these is needed for the paper helicopter? (a) a pencil (b) a mirror (c) a magnet (d) yeast

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