Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 546 · 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.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it still floats (d) it dissolves
2. 2.🍯 Which of these is less dense than water? (a) air (b) a coin (c) a glass marble (d) very salty water
3. 3.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
4. 4.🌈 In VIBGYOR, what number colour is yellow?
5. 5.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond
6. 6.True or false: ice cubes is needed for the water cycle bowl. (a) True (b) False
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a mirror (d) a sunny window
8. 8.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
9. 9.⚖️ 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 pouring”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.⚖️ 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 same glass”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.⚖️ 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 measure it (c) we keep it the same
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) a long string (d) yeast
14. 14.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
15. 15.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass sweats (b) ice escapes the glass (c) the glass leaks (d) vapour in air cools
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
17. 17.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
18. 18.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is magnetic (d) hot water is heavy
19. 19.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a ruler (c) a strip of paper (d) a paper clip
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🔍 Which is the odd one out? (a) an iron nail (b) a pebble (c) a steel spoon (d) a dry leaf
22. 22.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
23. 23.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a magnet (c) yeast (d) a ruler
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a towel (d) a glass of water
25. 25.🍯 Which of these is less dense than water? (a) a coin (b) a ping-pong ball (c) a glass marble (d) a pebble
26. 26.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) turmeric powder (d) a sheet of white paper
27. 27.🔍 Which is the odd one out? (a) a coin (b) honey (c) a glass marble (d) a cork
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
29. 29.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a ruler (c) a paper clip (d) a magnet
30. 30.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
31. 31.💧 Which change is this: ice becoming water? (a) evaporation (b) melting (c) freezing (d) condensation
32. 32.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) fewer drops form (c) more drops form (d) the water turns red
33. 33.🛟 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
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a battery cell (c) a tall clear glass (d) honey
35. 35.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
36. 36.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a mirror (c) a drinking straw (d) a balloon
37. 37.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
38. 38.⚖️ 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 same three liquids”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🔍 Which is the odd one out? (a) an empty capped bottle (b) an iron nail (c) a feather (d) a ping-pong ball
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False

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