Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 486 · 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.🚁 Which of these falls slowly through the air? (a) a coin (b) a feather (c) a stone (d) a crumpled paper ball
2. 2.🔍 Which is the odd one out? (a) honey (b) a glass marble (c) very salty water (d) air
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.⚖️ 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 the one thing we change. (a) False (b) True
5. 5.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a balloon (d) a magnet
7. 7.🔍 Which is the odd one out? (a) a pebble (b) a ping-pong ball (c) a coin (d) honey
8. 8.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
10. 10.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) powdered sugar (d) a big sugar cube
11. 11.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is
12. 12.True or false: an iron nail sinks in water. (a) True (b) False
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the kind of flower (b) time for colour to show (c) the length of the stem
14. 14.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
15. 15.🌊 What pushes a floating cork upward? (a) the air above (b) the water (c) the tub (d) the cork itself
16. 16.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
17. 17.True or false: drops under a pot lid is freezing. (a) True (b) False
18. 18.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) turmeric powder (c) a balloon (d) bright sunlight
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is kept the same. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a feather (c) a paper helicopter (d) an open sheet of paper
21. 21.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a glass of water (d) a battery cell
23. 23.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
24. 24.🔍 Which is the odd one out? (a) a glass marble (b) honey (c) a coin (d) cooking oil
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a battery cell (d) a few hours of waiting
26. 26.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a mirror (c) a tall clear glass (d) turmeric powder
27. 27.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a small cup (c) a magnet (d) sunlight
28. 28.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) sunlight (c) cling film (d) turmeric powder
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a mirror (d) bright sunlight
30. 30.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the amount of clay (c) the tub of water (d) whether it floats
32. 32.🚁 Which of these falls fast through the air? (a) a paper helicopter (b) a feather (c) a fluff of cotton (d) a glass marble
33. 33.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is the one thing we change. (a) False (b) True
34. 34.🛟 Which of these floats on water? (a) a dry leaf (b) a metal key (c) a steel spoon (d) a pebble
35. 35.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
36. 36.⚖️ 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
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the kind of clay
38. 38.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.🛟 Where is a safe place to drop the helicopter from? (a) from your raised hand (b) a wobbly chair (c) a roof edge (d) a high window ledge

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