Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 605 · 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 ruler is not needed for the paper helicopter. (a) False (b) True
2. 2.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
3. 3.🍯 Which of these is denser than water? (a) air (b) a glass marble (c) a cork (d) cooking oil
4. 4.⚖️ 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 order of pouring (c) how much of each liquid
5. 5.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sunny window (d) a clear glass of water
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a glass of water (d) a white flower
8. 8.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) throw the glass (d) pour it on the floor
9. 9.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the swimmer (c) gas from the rocket (d) water from the oars
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a suction hook
12. 12.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
13. 13.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) run around the tub (d) wipe up spills at once
14. 14.🛟 Which of these floats on water? (a) a ball of clay (b) an ice cube (c) a glass marble (d) a pebble
15. 15.True or false: a ping-pong ball floats on water. (a) False (b) True
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the flower floats away (d) the water turns green
17. 17.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) it stays still (c) forward (d) straight down
18. 18.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a mirror (c) cold water (d) a balloon
19. 19.True or false: a fridge magnet works by air pressure. (a) False (b) True
20. 20.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it sinks faster (c) it turns to stone (d) it can float
21. 21.🌈 In VIBGYOR, what number colour is yellow?
22. 22.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
23. 23.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🥄 Which of these dissolves faster? (a) sugar in icy water (b) powdered sugar (c) sugar left unstirred (d) a big sugar cube
27. 27.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
28. 28.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a fridge magnet (c) a sundial (d) a balloon rocket
29. 29.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
30. 30.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) particles move faster (c) cold water is wet (d) warm water is thicker
31. 31.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a paper clip (c) safety scissors (d) a balloon
32. 32.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🔍 Which is the odd one out? (a) a paper helicopter (b) a coin (c) a stone (d) a steel spoon
34. 34.True or false: a magnet is needed for the dissolving test. (a) False (b) True
35. 35.🧺 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 battery cell (d) a towel
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
39. 39.⚖️ 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) sun or shade (b) the size of the bowl (c) the amount of water (d) how many drops form
40. 40.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same glass (b) the order of the layers (c) the same three liquids (d) the order of pouring

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