Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 986 · 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 should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to win a prize (d) to keep children safe
2. 2.⚖️ 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
3. 3.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an ice-cream stick (c) a dry leaf (d) a coin
4. 4.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
5. 5.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) turmeric powder (d) a glass of water
8. 8.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) vinegar (d) a balloon
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a towel (d) a glass of water
11. 11.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.🔍 Which is the odd one out? (a) an empty capped bottle (b) a feather (c) a glass marble (d) a dry leaf
14. 14.💧 Which change is this: a pond icing over? (a) melting (b) evaporation (c) condensation (d) freezing
15. 15.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) blow it till it bursts (d) aim it at your friend
16. 16.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a balloon (d) a tall clear glass
17. 17.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a results table (d) yeast
18. 18.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a spoon (c) cooking oil (d) a mirror
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the stirring (c) the water temperature (d) the kind of sugar
20. 20.🔍 Which is the odd one out? (a) water becoming ice (b) a pond icing over (c) a puddle drying up (d) making ice lollies
21. 21.True or false: yeast is needed for the water rainbow. (a) False (b) True
22. 22.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a battery cell (b) a tall clear glass (c) a spoon (d) honey
23. 23.🌈 In VIBGYOR, what number colour is violet?
24. 24.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) a long string (d) a magnet
25. 25.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it stays still in air (c) it spins round (d) it flies upward
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the amount of water (c) time to dissolve
27. 27.True or false: a feather floats on water. (a) False (b) True
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) an open sheet of paper (c) a crumpled paper ball (d) a stone
31. 31.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a battery cell (c) a results table (d) a mirror
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) cold water (c) two clear glasses (d) a clock or timer
33. 33.True or false: a magnet is needed for the paper helicopter. (a) True (b) False
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a spoon (c) a magnet (d) a tall clear glass
35. 35.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
36. 36.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.🛟 Does a coin float or sink in water? (a) sinks (b) floats
38. 38.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a battery cell (c) a magnet (d) a mirror
39. 39.🌊 What pushes a floating cork upward? (a) the air above (b) the water (c) the cork itself (d) the tub
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is what we measure. (a) False (b) True

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