Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 575 · 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 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 window (c) the same glass (d) the same white paper
2. 2.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) faster (c) they never dry (d) they turn to ice
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a few hours of waiting (d) a glass of water
4. 4.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) under the honey (c) on top of the oil (d) in the water layer
5. 5.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they turn to honey (c) they mix for ever (d) they become solid
6. 6.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it sinks (d) it turns blue
7. 7.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
8. 8.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
9. 9.True or false: a battery cell is needed for the density tower. (a) True (b) False
10. 10.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a balloon (c) a battery cell (d) turmeric powder
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.True or false: a ping-pong ball floats on water. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a piece of foil (d) a piece of chalk
14. 14.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) turmeric powder (c) honey (d) a spoon
15. 15.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
18. 18.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) cooking oil (c) a mirror (d) a spoon
19. 19.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) turmeric powder (c) water (d) a big bowl
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
21. 21.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
22. 22.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a piece of foil (d) a steel spoon
23. 23.True or false: a magnet is needed for the water cycle bowl. (a) False (b) True
24. 24.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
25. 25.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a magnet (c) small test objects (d) a results table
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
29. 29.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) no change at all (c) it goes faster (d) less friction
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) False (b) True
31. 31.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a mirror (c) a strip of paper (d) a pencil
32. 32.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) sea water is warm (d) its hollow shape
33. 33.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
34. 34.🧺 Do we need honey for the density tower? (a) not needed (b) needed
35. 35.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a sugar cube
36. 36.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
37. 37.⚖️ 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 kept the same. (a) False (b) True
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
39. 39.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we keep it the same (c) we change it

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