Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 2 · 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 — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
4. 4.🍯 Which of these is denser than water? (a) a cork (b) cooking oil (c) a glass marble (d) air
5. 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a balloon (c) sticky tape (d) a long string
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) True (b) False
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
8. 8.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) pour it on the floor (d) do not lick the spoon
9. 9.True or false: snow turning to water is condensation. (a) True (b) False
10. 10.True or false: a magnet is not needed for the paper helicopter. (a) False (b) True
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a battery cell (b) cooking oil (c) a tall clear glass (d) a spoon
12. 12.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to win a prize (d) to keep children safe
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) a clear glass of water (d) yeast
15. 15.True or false: dew on morning grass is condensation. (a) True (b) False
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the amount of water (b) the time of day (c) the same glass (d) brightness of rainbow
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same glass (c) the amount of water (d) the same white paper
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the amount of sugar (c) time to dissolve
19. 19.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the crumpled ball (c) neither of them (d) the flat sheet
20. 20.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
21. 21.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
22. 22.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) both the same (d) powdered sugar
23. 23.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
24. 24.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same string (c) the same straw (d) the same tape
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) yeast
27. 27.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
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 the one thing we change. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a cork (b) a metal key (c) a ping-pong ball (d) an empty capped bottle
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the small pebble (d) the big log
32. 32.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it turns into a kite (c) it changes colour (d) it gets too heavy
33. 33.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a balloon (c) yeast (d) bright sunlight
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same glass
35. 35.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a high window ledge (c) from your raised hand (d) a wobbly chair
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) the way we turn it (c) whether the card stays
37. 37.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
38. 38.True or false: a strip of paper is needed for the paper helicopter. (a) True (b) False
39. 39.🧺 Which of these is needed for the balloon rocket? (a) sticky tape (b) turmeric powder (c) vinegar (d) a battery cell
40. 40.🌈 In VIBGYOR, what number colour is orange?

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