Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 559 · 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 of these falls fast through the air? (a) a steel spoon (b) a feather (c) an open sheet of paper (d) a toy parachute
2. 2.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls fast (b) falls slowly
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
5. 5.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a medicine dropper (c) a compass needle (d) a fridge magnet
6. 6.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to win a prize (c) to hide the corks (d) to keep children safe
7. 7.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls slowly (b) falls fast
8. 8.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
9. 9.🧺 Do we need a mirror for the paper helicopter? (a) not needed (b) needed
10. 10.🧺 Do we need turmeric powder for the water cycle bowl? (a) not needed (b) needed
11. 11.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
12. 12.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a coin (c) air (d) an ice cube
13. 13.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
14. 14.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
15. 15.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
16. 16.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
17. 17.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) in the oil layer (d) at the very bottom
18. 18.True or false: sugar stirred well dissolves faster. (a) True (b) False
19. 19.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) sugar stirred well (d) a big sugar cube
20. 20.💧 Which change is this: snow turning to water? (a) freezing (b) condensation (c) melting (d) evaporation
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) small test objects (d) a balloon
22. 22.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
23. 23.True or false: a balloon is needed for the density tower. (a) True (b) False
24. 24.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
25. 25.⚖️ 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 pouring (b) the order of the layers (c) the same glass
26. 26.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) water from the oars (d) the swimmer
27. 27.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) a balloon (c) a long string (d) a drinking straw
29. 29.⚖️ 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 keep it the same (b) we measure it (c) we change it
30. 30.🥄 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) sugar (d) chalk powder
31. 31.📘 What is the push of air on a falling thing called? (a) floating (b) air resistance (c) dissolving (d) magnetism
32. 32.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
34. 34.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
35. 35.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it turns blue (d) it floats higher
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a glass of water (d) a white flower
37. 37.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) rain (c) lightning (d) sunshine
38. 38.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a magnet (c) a pencil (d) a ruler
39. 39.🛟 Which of these sinks in water? (a) a dry leaf (b) a cork (c) a metal key (d) an ice cube
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we keep it the same (c) we measure it

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