Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 499 · 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.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) faster (b) slower (c) they turn to ice (d) they never dry
2. 2.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a spoon (c) yeast (d) a tall clear glass
4. 4.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
5. 5.⚖️ 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
6. 6.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) a battery cell (d) a tub of water
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a tall clear glass (c) a spoon (d) turmeric powder
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sheet of white paper (c) bright sunlight (d) a sunny window
10. 10.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
11. 11.📘 What is the push of air on a falling thing called? (a) magnetism (b) floating (c) dissolving (d) air resistance
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
13. 13.⚖️ 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 change it (c) we measure it
14. 14.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) turmeric powder (c) a balloon (d) sticky tape
15. 15.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
17. 17.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) forward (c) backward (d) straight down
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the amount of water (c) the size of the bowl (d) how many drops form
20. 20.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
21. 21.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a paper towel
22. 22.📘 What is water vapour? (a) salty water (b) a kind of smoke (c) water as a gas (d) tiny ice cubes
23. 23.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) slower (c) not at all (d) faster
24. 24.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) in the oil layer (d) at the very bottom
25. 25.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a sugar cube (d) a paper towel
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) bright sunlight (c) a sunny window (d) a clear glass of water
27. 27.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
28. 28.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
29. 29.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
30. 30.🧺 Do we need honey for the density tower? (a) not needed (b) needed
31. 31.🔍 Which is the odd one out? (a) an ice-cream stick (b) a cork (c) a ball of clay (d) a feather
32. 32.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a mirror (c) small test objects (d) a results table
33. 33.True or false: a suction hook works by air pressure. (a) False (b) True
34. 34.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) aim it at your friend (d) blow it till it bursts
35. 35.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) red (d) yellow
36. 36.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they mix for ever (c) they turn to honey (d) they separate again
37. 37.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it goes less far (d) it turns into a kite
38. 38.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the rocket (c) the balloon (d) the swimmer
39. 39.🛟 Which of these sinks in water? (a) an ice cube (b) an ice-cream stick (c) a cork (d) a pebble
40. 40.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed

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