Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 863 · 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.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the stickiest (c) it is yellow (d) it is the densest
2. 2.🔍 Which is the odd one out? (a) an ice cube (b) an ice-cream stick (c) a piece of thermocol (d) an iron nail
3. 3.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
4. 4.True or false: cooking oil is not needed for the density tower. (a) True (b) False
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) how big we blow it (c) the same straw (d) distance it travels
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) True (b) False
9. 9.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the order of pouring (c) how much of each liquid
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) food colour (d) a mirror
12. 12.💧 Which of these is evaporation? (a) butter going runny (b) drops on a cold glass (c) a misty bathroom mirror (d) a puddle drying up
13. 13.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) leave water on the floor (d) play near a deep pond
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
15. 15.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the same three liquids (b) the order of pouring (c) the order of the layers
17. 17.True or false: cold water is not needed for the dissolving test. (a) False (b) True
18. 18.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) whether the card stays (b) the way we turn it (c) the same glass (d) how full the glass is
20. 20.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it gets too heavy (d) it can pop loudly
21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
23. 23.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a rainbow (c) a crystal (d) a magnet
24. 24.True or false: a sugar cube does not let water climb. (a) False (b) True
25. 25.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it turns into a kite (c) it goes less far (d) it goes much farther
26. 26.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is the one thing we change. (a) False (b) True
27. 27.True or false: a battery cell is not needed for the water cycle bowl. (a) False (b) True
28. 28.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) water a swimmer pushes (d) the rocket
29. 29.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
30. 30.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) yeast (c) a drinking straw (d) sticky tape
31. 31.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) cling film (c) a big bowl (d) a magnet
32. 32.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a magnet (d) a shadow of ice
33. 33.🌈 How many colours do we name in a rainbow (VIBGYOR)?
34. 34.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) honey (c) the spoon (d) cooking oil
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🔍 Which is the odd one out? (a) a toy parachute (b) an open sheet of paper (c) a feather (d) a steel spoon
37. 37.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.⚖️ 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 change it (b) we measure it (c) we keep it the same
40. 40.True or false: honey is needed for the density tower. (a) False (b) True

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