Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 604 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sunny window (c) a clear glass of water (d) bright sunlight
2. 2.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
7. 7.🛟 Does a coin float or sink in water? (a) sinks (b) floats
8. 8.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
9. 9.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) water with food colour (c) a tall clear glass (d) cooking oil
10. 10.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
11. 11.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
12. 12.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a paper towel (d) a cotton thread
13. 13.📘 What is the push of air on a falling thing called? (a) floating (b) dissolving (c) magnetism (d) air resistance
14. 14.True or false: warm water is not needed for the dissolving test. (a) False (b) True
15. 15.True or false: an open sheet of paper falls slowly through the air. (a) False (b) True
16. 16.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a balloon (d) a glass of water
18. 18.True or false: an ice cube is less dense than water. (a) False (b) True
19. 19.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
20. 20.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
21. 21.🍯 Which of these is less dense than water? (a) a glass marble (b) a pebble (c) a coin (d) an ice cube
22. 22.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
23. 23.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
24. 24.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
25. 25.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) two clear glasses (c) sugar (d) cold water
27. 27.🔍 Which is the odd one out? (a) a pond icing over (b) sweat drying on skin (c) making ice lollies (d) water becoming ice
28. 28.💧 Which change is this: a puddle drying up? (a) evaporation (b) melting (c) freezing (d) condensation
29. 29.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
30. 30.⚖️ 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 kept the same. (a) False (b) True
31. 31.True or false: very salty water is denser than water. (a) False (b) True
32. 32.🧺 Do we need a balloon for the paper helicopter? (a) not needed (b) needed
33. 33.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
34. 34.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) pour more water (c) slide on them (d) leave them wet
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.True or false: a battery cell is needed for the paper helicopter. (a) True (b) False
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) time for colour to show (c) the amount of colour (d) the kind of flower
38. 38.True or false: baking soda dissolves in water. (a) True (b) False
39. 39.True or false: an ice cube is denser than water. (a) False (b) True
40. 40.True or false: a battery cell is not needed for the density tower. (a) True (b) False

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