Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 255 · 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 is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
2. 2.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) some stays undissolved (c) the sugar turns to salt (d) all of it dissolves
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a battery cell (c) bright sunlight (d) a sheet of white paper
5. 5.🛟 Which of these sinks in water? (a) a dry leaf (b) a ball of clay (c) an empty capped bottle (d) an ice-cream stick
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
7. 7.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a flower stem (d) a steel spoon
8. 8.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a magnetic chess set
9. 9.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
10. 10.True or false: a balloon is needed for the dissolving test. (a) False (b) True
11. 11.True or false: water a swimmer pushes goes forward. (a) True (b) False
12. 12.🛟 Which of these floats on water? (a) a pebble (b) a steel spoon (c) an ice cube (d) a ball of clay
13. 13.🛟 Which of these floats on water? (a) an iron nail (b) a cork (c) a coin (d) a steel spoon
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.True or false: a balloon is needed for the water cycle bowl. (a) False (b) True
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
17. 17.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the card stays on (d) the water turns to ice
18. 18.🛟 Which of these sinks in water? (a) a cork (b) a ping-pong ball (c) an ice cube (d) a coin
19. 19.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
20. 20.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic pin holder (c) a drinking straw (d) a suction hook
21. 21.🥄 Which of these does not dissolve in water? (a) food colour (b) cooking oil (c) sugar (d) glucose powder
22. 22.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
23. 23.True or false: making ice lollies is melting. (a) False (b) True
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
25. 25.🥄 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) small pebbles (d) sugar
26. 26.True or false: a glass marble falls fast through the air. (a) True (b) False
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) bright sunlight (d) a clear glass of water
28. 28.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they all turn green (d) they turn two colours
30. 30.💧 Which of these is evaporation? (a) snow turning to water (b) dew on morning grass (c) a pond icing over (d) a puddle drying up
31. 31.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) they turn to ice (c) slower (d) faster
34. 34.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a medicine dropper
35. 35.True or false: an open sheet of paper falls slowly through the air. (a) False (b) True
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a balloon (d) a towel for spills
37. 37.💧 Which of these is condensation? (a) butter going runny (b) making ice lollies (c) a puddle drying up (d) dew on morning grass
38. 38.🚀 Which of these goes backward? (a) the rocket (b) the balloon (c) the rowing boat (d) water a swimmer pushes
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a white flower (d) a few hours of waiting
40. 40.🍯 Which of these is less dense than water? (a) a coin (b) very salty water (c) honey (d) a cork

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