Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 502 · 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.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) False (b) True
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) sticky tape (c) vinegar (d) a long string
5. 5.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) on top of the oil (c) under the honey (d) in the honey layer
6. 6.True or false: a drinking straw works by air pressure. (a) False (b) True
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
10. 10.True or false: air from the balloon goes forward. (a) True (b) False
11. 11.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a balloon (c) a teaspoon (d) sugar
12. 12.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) no change at all (c) less friction (d) more friction, less far
13. 13.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
14. 14.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it can pop loudly (d) it turns into a kite
15. 15.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) leave water on the floor (d) run around the tub
16. 16.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a drinking straw (c) a magnet (d) a balloon
17. 17.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) ice cubes (c) sunlight (d) a mirror
18. 18.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) honey (c) cooking oil (d) a mirror
19. 19.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
20. 20.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a ruler (c) a battery cell (d) a strip of paper
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
22. 22.True or false: a glass marble does not let water climb. (a) False (b) True
23. 23.🛟 Does a feather float or sink in water? (a) floats (b) sinks
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
26. 26.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
27. 27.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
28. 28.🍯 Which of these is denser than water? (a) a pebble (b) a ping-pong ball (c) cooking oil (d) a cork
29. 29.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) bright sunlight (d) a sheet of white paper
31. 31.True or false: a magnet is not needed for the paper helicopter. (a) False (b) True
32. 32.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
33. 33.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
34. 34.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
35. 35.True or false: a battery cell is needed for the paper helicopter. (a) False (b) True
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a white flower (d) turmeric powder
37. 37.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) backward (c) straight down (d) it stays still
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) how many drops form (b) sun or shade (c) the size of the bowl (d) the amount of water
39. 39.🌈 In VIBGYOR, what number colour is violet?
40. 40.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) pour it on the floor (d) throw the glass

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