Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 167 · 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: a big bowl is needed for the water cycle bowl. (a) False (b) True
2. 2.📘 What is water vapour? (a) tiny ice cubes (b) a kind of smoke (c) water as a gas (d) salty water
3. 3.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
4. 4.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) sunshine (b) rain (c) lightning (d) wind
5. 5.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) pour it on the floor (d) taste each layer
6. 6.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
7. 7.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) a balloon (d) a sheet of white paper
8. 8.🔍 Which is the odd one out? (a) an open sheet of paper (b) a feather (c) a fluff of cotton (d) a glass marble
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the stirring (c) the water temperature (d) time to dissolve
10. 10.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water can scald (c) hot water is heavy (d) it changes colour
11. 11.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a mirror (c) a results table (d) yeast
12. 12.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) sugar (c) a comb (d) warm water
13. 13.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) a cork (d) very salty water
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
15. 15.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) safety scissors (c) a strip of paper (d) a balloon
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) bright sunlight (d) a sunny window
17. 17.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they separate again (d) they mix for ever
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the drop height (c) time to reach the floor
19. 19.🧺 Do we need safety scissors for the paper helicopter? (a) needed (b) not needed
20. 20.⚖️ 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 change it (c) we keep it the same
21. 21.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
22. 22.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to salt (b) it disappears (c) it turns to smoke (d) it turns to drops
23. 23.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls fast (b) falls slowly
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) yeast (c) turmeric powder (d) a mirror
27. 27.True or false: sugar left unstirred dissolves faster. (a) False (b) True
28. 28.🚀 Which of these goes forward? (a) water from the oars (b) water a swimmer pushes (c) gas from the rocket (d) the swimmer
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a glass of water (d) a towel
31. 31.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) a balloon (d) a magnet
34. 34.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a medicine dropper (d) a magnetic pin holder
35. 35.🧺 Do we need honey for the density tower? (a) needed (b) not needed
36. 36.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
37. 37.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
38. 38.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
39. 39.🔍 Which is the odd one out? (a) a glass marble (b) air (c) very salty water (d) a pebble
40. 40.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun

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