Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 142 · 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 battery cell is needed for the paper helicopter. (a) False (b) True
2. 2.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it dissolves (c) it turns to stone (d) it sinks faster
3. 3.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) a sunny window (d) a clear glass of water
4. 4.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
5. 5.True or false: a crumpled paper ball falls slowly through the air. (a) True (b) False
6. 6.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) on top of the oil (c) under the honey (d) in the water layer
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
9. 9.🧺 Which of these is needed for the paper helicopter? (a) safety scissors (b) a balloon (c) a battery cell (d) a mirror
10. 10.⚖️ 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 same glass (c) the order of pouring
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) food colour (d) a glass of water
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the way we turn it (b) how full the glass is (c) whether the card stays (d) the same card
13. 13.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) its hollow shape (c) sea water is warm (d) steel is very light
14. 14.⚖️ 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
15. 15.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a tub of water (d) a results table
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a balloon (d) turmeric powder
17. 17.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
18. 18.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) False (b) True
20. 20.⚖️ 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) how much of each liquid (b) the order of pouring (c) the order of the layers (d) the same glass
21. 21.🛟 Which of these floats on water? (a) a coin (b) a metal key (c) an empty capped bottle (d) an iron nail
22. 22.True or false: sunlight is needed for the water cycle bowl. (a) False (b) True
23. 23.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
24. 24.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water can scald (c) it changes colour (d) hot water is magnetic
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
27. 27.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it floats (c) it bounces up (d) it sinks
28. 28.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) a big bowl (c) turmeric powder (d) cling film
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) the amount of water (c) how many drops form
30. 30.True or false: air from the balloon goes backward. (a) False (b) True
31. 31.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
32. 32.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
33. 33.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) wipe them dry (c) leave them wet (d) pour more water
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a battery cell
35. 35.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) faster (c) slower (d) the same
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the length of the stem (c) the amount of water (d) the room it stands in
37. 37.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
38. 38.🧺 Which of these is needed for the paper helicopter? (a) a ruler (b) a mirror (c) turmeric powder (d) yeast
39. 39.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a strip of cloth
40. 40.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same

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