Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 731 · 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 is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a battery cell
2. 2.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) oil turns into honey (d) spilled oil is slippery
3. 3.🛟 Which of these floats on water? (a) a steel spoon (b) a ping-pong ball (c) a pebble (d) an iron nail
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the tub of water (c) the amount of clay (d) whether it floats
5. 5.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) two chairs (c) a long string (d) sticky tape
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) a mirror (d) sticky tape
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the kind of paper (b) the length of the blades (c) the person dropping (d) the drop height
9. 9.True or false: warm water is needed for the dissolving test. (a) True (b) False
10. 10.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of colour (c) the length of the stem
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🔍 Which is the odd one out? (a) sand (b) food colour (c) sawdust (d) chalk powder
15. 15.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) it turns to ice (c) some water evaporates (d) the water increases
16. 16.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes less far (c) it turns into a kite (d) it goes much farther
17. 17.🚁 Why does the paper helicopter fall slowly? (a) it has no weight (b) a magnet holds it (c) the floor pushes it (d) air pushes on its blades
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a balloon (c) a magnet (d) turmeric powder
19. 19.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a glass marble (d) a flower stem
20. 20.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) on top of the oil (c) in the honey layer (d) under the honey
21. 21.⚖️ 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
22. 22.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a teaspoon (c) a magnet (d) sugar
24. 24.🧺 Which of these is not needed for the density tower? (a) a mirror (b) a spoon (c) honey (d) water with food colour
25. 25.⚖️ 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 the one thing we change. (a) False (b) True
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a mirror
27. 27.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) a magnet
28. 28.🔍 Which is the odd one out? (a) a glass marble (b) air (c) an ice cube (d) a cork
29. 29.True or false: honey is needed for the density tower. (a) True (b) False
30. 30.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
31. 31.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to splash everyone (d) to win a prize
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a towel (d) a glass of water
33. 33.True or false: ice cubes is needed for the water cycle bowl. (a) True (b) False
34. 34.True or false: a medicine dropper works by magnetism. (a) True (b) False
35. 35.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
36. 36.🚀 Which of these goes forward? (a) gas from the rocket (b) the rowing boat (c) water a swimmer pushes (d) air from the balloon
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is what we measure. (a) False (b) True
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a magnet (c) a strip of paper (d) a paper clip
39. 39.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a glass marble (c) a plastic ruler (d) a rubber eraser
40. 40.True or false: a balloon is not needed for the paper helicopter. (a) False (b) True

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