Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 569 · 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.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the big log (d) the small pebble
3. 3.True or false: air from the balloon goes backward. (a) False (b) True
4. 4.🧺 Which of these is not needed for the density tower? (a) a battery cell (b) cooking oil (c) a tall clear glass (d) honey
5. 5.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
6. 6.True or false: a steel spoon falls slowly through the air. (a) True (b) False
7. 7.⚖️ 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
8. 8.🍯 Which of these is less dense than water? (a) a pebble (b) honey (c) a ping-pong ball (d) a glass marble
9. 9.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) oil turns into honey (d) spilled oil is slippery
12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
13. 13.📘 What does “dense” mean? (a) heavy for its size (b) very colourful (c) very hot (d) very thin
14. 14.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
15. 15.🛟 Which of these floats on water? (a) a glass marble (b) a pebble (c) a coin (d) a dry leaf
16. 16.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
17. 17.True or false: food colour does not dissolve in water. (a) True (b) False
18. 18.True or false: an open sheet of paper falls fast through the air. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a bicycle pump
20. 20.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
21. 21.🚀 Which of these goes backward? (a) the swimmer (b) water a swimmer pushes (c) the rowing boat (d) the balloon
22. 22.True or false: a piece of foil lets water climb up it. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
24. 24.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) all of it dissolves (c) the sugar turns to salt (d) the water turns solid
25. 25.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
26. 26.🧺 Do we need a balloon for the water cycle bowl? (a) not needed (b) needed
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) turmeric powder (d) a sunny window
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) True (b) False
29. 29.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) the water increases (c) it turns to ice (d) some water evaporates
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
31. 31.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a long string (c) two chairs (d) a magnet
32. 32.True or false: turmeric powder is needed for the paper helicopter. (a) False (b) True
33. 33.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) yeast (c) a big bowl (d) a mirror
35. 35.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) safety scissors (c) a balloon (d) a battery cell
37. 37.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a mirror (c) honey (d) water with food colour
38. 38.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it turns into a kite (d) it goes less far
39. 39.True or false: a metal key sinks in water. (a) False (b) True
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True

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