Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 749 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
3. 3.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a toy parachute (c) a paper helicopter (d) a steel spoon
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a pebble (c) honey (d) air
6. 6.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) two clear glasses (c) warm water (d) a magnet
7. 7.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
8. 8.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
10. 10.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) all of it dissolves (c) the water turns solid (d) the sugar turns to salt
11. 11.True or false: a bicycle pump works by magnetism. (a) False (b) True
12. 12.🍯 Which of these is denser than water? (a) a ping-pong ball (b) an ice cube (c) cooking oil (d) a pebble
13. 13.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
16. 16.True or false: a magnetic chess set works by air pressure. (a) True (b) False
17. 17.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the same three liquids (c) the order of pouring
18. 18.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) leave them wet (c) pour more water (d) wipe them dry
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a sheet of white paper (d) a sunny window
21. 21.⚖️ 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 tub of water
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a mirror (d) a towel
23. 23.🛟 Which of these floats on water? (a) a ping-pong ball (b) an iron nail (c) a pebble (d) a glass marble
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) distance it travels (c) how big we blow it (d) the same tape
27. 27.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
28. 28.🔍 Which is the odd one out? (a) a coin (b) air (c) a ping-pong ball (d) an ice cube
29. 29.💧 Which of these is condensation? (a) dew on morning grass (b) snow turning to water (c) butter going runny (d) water becoming ice
30. 30.🥄 Which of these does not dissolve in water? (a) table salt (b) sand (c) sugar (d) food colour
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) brightness of rainbow (b) the time of day (c) the amount of water (d) the same glass
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
34. 34.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is kept the same. (a) True (b) False
36. 36.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they become solid (c) they turn to honey (d) they mix for ever
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a mirror (d) food colour
38. 38.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) how big we blow it (c) the same straw (d) the slope of the string
40. 40.🔍 Which is the odd one out? (a) a pebble (b) an ice cube (c) an iron nail (d) a glass marble

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