Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 799 · 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 trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
2. 2.True or false: a fridge magnet works by magnetism. (a) False (b) True
3. 3.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) small test objects (c) a balloon (d) turmeric powder
4. 4.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same string (c) the same straw (d) the slope of the string
6. 6.🔍 Which is the odd one out? (a) an iron nail (b) a feather (c) an ice cube (d) an empty capped bottle
7. 7.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) water (d) smoke
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same straw (b) how big we blow it (c) distance it travels
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so it turns blue (d) so the Sun moves
10. 10.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
14. 14.True or false: a dry leaf floats on water. (a) True (b) False
15. 15.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
16. 16.⚖️ 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
17. 17.💧 Which of these lets water climb up it? (a) a glass marble (b) a strip of cloth (c) a piece of foil (d) a rubber eraser
18. 18.🌈 In VIBGYOR, what number colour is blue?
19. 19.True or false: a pencil is needed for the paper helicopter. (a) True (b) False
20. 20.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a paper towel (d) a steel spoon
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a balloon (d) small test objects
23. 23.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
24. 24.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to keep children safe (d) to win a prize
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a battery cell (c) a sink or a bucket (d) a towel
26. 26.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
27. 27.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
28. 28.⚖️ 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 keep it the same (c) we measure it
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a few hours of waiting (d) a white flower
30. 30.⚖️ 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
31. 31.True or false: a cork is denser than water. (a) True (b) False
32. 32.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a magnet (c) a glass of water (d) a towel
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
35. 35.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) not at all (c) faster (d) the same
36. 36.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it spread in the water (c) it vanished for ever (d) it became air
37. 37.🚁 Which of these falls fast through the air? (a) a coin (b) a paper helicopter (c) an open sheet of paper (d) a feather
38. 38.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
40. 40.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed

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