Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 37 · 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) an ice cube (b) a glass marble (c) a coin (d) very salty water
2. 2.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.⚖️ 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 the layers”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a mirror (c) a magnet (d) a tub of water
6. 6.True or false: a magnet is needed for the dissolving test. (a) True (b) False
7. 7.True or false: a flower stem lets water climb up it. (a) True (b) False
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
10. 10.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
11. 11.True or false: an iron nail floats on water. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a feather (b) a paper helicopter (c) a glass marble (d) an open sheet of paper
13. 13.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
14. 14.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
16. 16.💧 Why do water drops form on the outside of a glass of ice water? (a) ice escapes the glass (b) the glass sweats (c) the glass leaks (d) vapour in air cools
17. 17.⚖️ 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 time we wait (b) sun or shade (c) how many drops form (d) the amount of water
18. 18.🔍 Which is the odd one out? (a) sugar (b) sawdust (c) chalk powder (d) sand
19. 19.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
20. 20.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a ruler (c) safety scissors (d) turmeric powder
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a magnet
22. 22.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) a drinking straw (d) a magnet
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) False (b) True
24. 24.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) yeast (d) a long string
25. 25.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the room it stands in (b) the length of the stem (c) time for colour to show (d) the kind of flower
27. 27.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they mix for ever (c) they separate again (d) they become solid
28. 28.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a balloon (d) a few hours of waiting
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the same card
31. 31.🍯 Which of these is denser than water? (a) cooking oil (b) an ice cube (c) air (d) a pebble
32. 32.True or false: yeast is needed for the density tower. (a) False (b) True
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a balloon
34. 34.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) faster (c) slower (d) it floats up
35. 35.💧 Which of these is evaporation? (a) drops under a pot lid (b) dew on morning grass (c) sweat drying on skin (d) drops on a cold glass
36. 36.🛟 Which of these sinks in water? (a) a feather (b) an ice cube (c) a coin (d) an ice-cream stick
37. 37.True or false: honey is not needed for the density tower. (a) True (b) False
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) how much of each liquid (c) the same glass (d) the order of the layers
39. 39.True or false: a glass marble falls slowly through the air. (a) False (b) True
40. 40.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is what we measure. (a) True (b) False

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