Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 435 · 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.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
2. 2.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) chew them (d) throw them away safely
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🔍 Which is the odd one out? (a) a steel spoon (b) a stone (c) an open sheet of paper (d) a coin
6. 6.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) False (b) True
8. 8.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the slope of the string
10. 10.True or false: honey is denser than water. (a) False (b) True
11. 11.🧺 Which of these is not needed for the paper helicopter? (a) a balloon (b) a paper clip (c) a strip of paper (d) a ruler
12. 12.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) cold water (c) a balloon (d) sugar
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) a comb (d) sugar
16. 16.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a steel spoon (d) a rubber eraser
17. 17.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a solution (c) a rainbow (d) a magnet
18. 18.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
19. 19.True or false: a big sugar cube dissolves faster. (a) False (b) True
20. 20.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) a small cup (c) ice cubes (d) sunlight
21. 21.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) a small cup (c) water (d) a magnet
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) False (b) True
24. 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) water with food colour (c) cooking oil (d) a spoon
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the shape of the clay (c) whether it floats (d) the amount of clay
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) a battery cell
27. 27.🧺 Do we need a balloon for the water cycle bowl? (a) needed (b) not needed
28. 28.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a magnetic pin holder (c) a magnetic chess set (d) a fridge magnet
29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a mirror (c) a clock or timer (d) warm water
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🔍 Which is the odd one out? (a) sugar (b) sand (c) food colour (d) glucose powder
32. 32.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) its hollow shape (d) sea water is warm
33. 33.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
34. 34.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
35. 35.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) faster (c) it stops in the air (d) slower
36. 36.True or false: a magnet is not needed for the paper helicopter. (a) False (b) True
37. 37.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar left unstirred (c) powdered sugar (d) sugar in warm water
38. 38.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is less dense (c) oil is heavier (d) oil is sticky
40. 40.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False

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