Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 153 · 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.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a tall clear glass (c) honey (d) a battery cell
2. 2.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it turns to stone (d) it can float
3. 3.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) slide on them (c) wipe them dry (d) leave them wet
4. 4.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
5. 5.🍯 Which of these is denser than water? (a) a ping-pong ball (b) air (c) a coin (d) a cork
6. 6.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it turns into a kite (d) it goes less far
7. 7.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
8. 8.🍯 Which of these is less dense than water? (a) a pebble (b) a ping-pong ball (c) a coin (d) a glass marble
9. 9.⚖️ 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) True (b) False
10. 10.⚖️ 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) the way we turn it (b) the same glass (c) whether the card stays (d) how full the glass is
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
12. 12.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
13. 13.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
14. 14.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
15. 15.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
16. 16.True or false: honey is needed for the density tower. (a) False (b) True
17. 17.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) powdered sugar (d) both the same
18. 18.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
19. 19.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) sand (d) sawdust
20. 20.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
21. 21.True or false: powdered sugar dissolves faster. (a) False (b) True
22. 22.True or false: an open sheet of paper falls slowly through the air. (a) False (b) True
23. 23.True or false: a strip of paper is not needed for the paper helicopter. (a) False (b) True
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) False (b) True
25. 25.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
26. 26.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) many colours mixed (d) tiny drops of water
27. 27.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) capillary action (d) evaporation
28. 28.🔍 Which is the odd one out? (a) a pond icing over (b) drops under a pot lid (c) water becoming ice (d) making ice lollies
29. 29.🧺 Which of these is needed for the density tower? (a) a balloon (b) a magnet (c) water with food colour (d) turmeric powder
30. 30.💧 Which change is this: ice becoming water? (a) freezing (b) evaporation (c) condensation (d) melting
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) a white flower (d) food colour
32. 32.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
33. 33.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) turmeric powder (c) a balloon (d) a sunny window
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) how many drops form (b) sun or shade (c) the time we wait (d) the amount of water
36. 36.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
37. 37.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
38. 38.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the density tower? (a) a spoon (b) a mirror (c) water with food colour (d) cooking oil
40. 40.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours

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