Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 143 · 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.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
3. 3.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) yeast (d) bright sunlight
4. 4.🥄 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) chalk powder (d) food colour
5. 5.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) yeast (d) a towel
7. 7.💧 Which change is this: water becoming ice? (a) condensation (b) evaporation (c) melting (d) freezing
8. 8.🧺 Which of these is needed for the density tower? (a) cooking oil (b) a balloon (c) a mirror (d) a magnet
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a balloon
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🔍 Which is the odd one out? (a) a coin (b) a crumpled paper ball (c) a toy parachute (d) a glass marble
12. 12.True or false: a balloon is not needed for the paper helicopter. (a) False (b) True
13. 13.🛟 Does a coin float or sink in water? (a) floats (b) sinks
14. 14.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a mirror (c) a magnet (d) a tall clear glass
15. 15.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is very cold (c) ice is magnetic (d) water is sticky
16. 16.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a mirror (c) sticky tape (d) a long string
19. 19.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
20. 20.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
21. 21.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) both the same (d) the sugar cube
22. 22.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) a magnet pulls it (c) the string pulls it (d) the straw is heavy
23. 23.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the order of the layers (c) how much of each liquid
24. 24.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) more drops form (c) the water turns red (d) the bowl freezes
25. 25.🥄 Which of these does not dissolve in water? (a) small pebbles (b) sugar (c) table salt (d) glucose powder
26. 26.True or false: a steel spoon falls slowly through the air. (a) False (b) True
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same glass (b) the same white paper (c) the amount of water (d) the same window
28. 28.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
29. 29.True or false: a cotton thread does not let water climb. (a) False (b) True
30. 30.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) air (b) a glass marble (c) a pebble (d) honey
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) False (b) True
33. 33.True or false: a crumpled paper ball falls fast through the air. (a) False (b) True
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) yeast (c) bright sunlight (d) a sheet of white paper
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
36. 36.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) turmeric powder (c) yeast (d) a balloon
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water
39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) sugar (c) cold water (d) a teaspoon
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we keep it the same (c) we change it

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