Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 557 · 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.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
2. 2.True or false: turmeric powder is needed for the paper helicopter. (a) True (b) False
3. 3.⚖️ 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) distance it travels (c) the same string (d) the same straw
4. 4.True or false: chalk powder dissolves in water. (a) True (b) False
5. 5.🛟 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
6. 6.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the water layer (c) in the honey layer (d) on top of the oil
7. 7.🌈 In VIBGYOR, what number colour is yellow?
8. 8.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
11. 11.💧 Which change is this: drops on a cold glass? (a) freezing (b) melting (c) evaporation (d) condensation
12. 12.🍯 Which of these is less dense than water? (a) a glass marble (b) cooking oil (c) honey (d) very salty water
13. 13.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) keep it away from faces (c) aim it at your friend (d) put string round a neck
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a balloon (d) a glass of water
15. 15.True or false: a cotton thread does not let water climb. (a) True (b) False
16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🔍 Which is the odd one out? (a) honey (b) a coin (c) a glass marble (d) an ice cube
18. 18.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
19. 19.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains
20. 20.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
21. 21.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) reflection (d) evaporation
22. 22.True or false: water from the oars goes forward. (a) False (b) True
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the kind of clay (c) whether it floats (d) the shape of the clay
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
27. 27.🍯 Which of these is less dense than water? (a) air (b) very salty water (c) a pebble (d) a coin
28. 28.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
29. 29.True or false: a magnet is needed for the density tower. (a) True (b) False
30. 30.🥄 Which of these does not dissolve in water? (a) table salt (b) food colour (c) sawdust (d) glucose powder
31. 31.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) the cold water (d) air pushing up
32. 32.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
33. 33.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) a magnet pulls it (d) escaping air pushes it
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ 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 three liquids is kept the same. (a) False (b) True
36. 36.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) it changes colour (c) hot water is heavy (d) hot water is magnetic
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
38. 38.True or false: sugar in warm water dissolves slower. (a) True (b) False
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 measure it (b) we change it (c) we keep it the same
40. 40.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) a magnet (d) turmeric powder

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids