Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 364 · 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 needed for the float-or-sink test? (a) a tub of water (b) a magnet (c) turmeric powder (d) yeast
2. 2.💧 Why do water drops form on the outside of a glass of ice water? (a) vapour in air cools (b) the glass leaks (c) the glass sweats (d) ice escapes the glass
3. 3.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) honey (d) a balloon
4. 4.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes less far (d) it goes much farther
5. 5.🥄 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) baking soda (d) cooking oil
6. 6.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a balloon (d) small test objects
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
10. 10.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to weigh down the bottom (b) to make it fall slower (c) to make it magnetic (d) to stop the spinning
11. 11.True or false: cold water is needed for the dissolving test. (a) True (b) False
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the person dropping (c) time to reach the floor (d) the length of the blades
13. 13.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water is magnetic (d) hot water can scald
14. 14.True or false: a battery cell is needed for the paper helicopter. (a) False (b) True
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) the spoon (c) honey (d) coloured water
17. 17.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
18. 18.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
19. 19.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
20. 20.⚖️ 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 amount of clay (b) the shape of the clay (c) whether it floats (d) the kind of clay
21. 21.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
22. 22.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
24. 24.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) sticky tape (c) a drinking straw (d) a magnet
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) cotton wool (c) warm water (d) cold water
26. 26.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of foil (c) a cotton thread (d) a strip of cloth
27. 27.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
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 white paper”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) evaporation (d) magnetism
30. 30.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is what we measure. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a pond icing over (b) snow turning to water (c) ice becoming water (d) butter going runny
33. 33.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) False (b) True
35. 35.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
36. 36.⚖️ 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) True (b) False
37. 37.🛟 Which of these sinks in water? (a) an ice cube (b) an ice-cream stick (c) a coin (d) a ping-pong ball
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the time of day
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a stiff postcard (d) a sink or a bucket

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