Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 65 · 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 the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) False (b) True
4. 4.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.💧 Which of these is melting? (a) dew on morning grass (b) a puddle drying up (c) water becoming ice (d) snow turning to water
6. 6.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
7. 7.🧺 Which of these is needed for the balloon rocket? (a) a balloon (b) a magnet (c) a mirror (d) a battery cell
8. 8.🔍 Which is the odd one out? (a) a glass marble (b) a ball of clay (c) an ice cube (d) a pebble
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
11. 11.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.True or false: a feather sinks in water. (a) True (b) False
13. 13.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a spoon (c) a balloon (d) water with food colour
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) time for colour to show (b) the kind of flower (c) the length of the stem (d) the amount of water
15. 15.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
16. 16.True or false: a comb is not needed for the dissolving test. (a) False (b) True
17. 17.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
18. 18.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it sinks faster (c) it turns to stone (d) it can float
19. 19.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
20. 20.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a balloon (c) a mirror (d) a results table
21. 21.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
22. 22.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
23. 23.True or false: warm water is needed for the dissolving test. (a) True (b) False
24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) two clear glasses (d) honey
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a magnet (c) sugar (d) a teaspoon
27. 27.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a strip of paper (c) safety scissors (d) a paper clip
28. 28.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
29. 29.⚖️ 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) the amount of water (b) the size of the bowl (c) sun or shade (d) how many drops form
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a few hours of waiting (d) a magnet
32. 32.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
33. 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) a balloon (d) cold water
34. 34.True or false: an ice cube is less dense than water. (a) False (b) True
35. 35.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) look for leftover grains (d) taste it
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
38. 38.🔍 Which is the odd one out? (a) very salty water (b) a glass marble (c) a coin (d) a cork
39. 39.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) give them to a baby (d) chew them
40. 40.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed

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