Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 294 · 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.True or false: a spoon is needed for the density tower. (a) False (b) True
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the kind of clay
3. 3.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) under the honey (d) on top of the oil
4. 4.🔍 Which is the odd one out? (a) snow turning to water (b) butter going runny (c) drops on a cold glass (d) ice becoming water
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a battery cell (c) a paper clip (d) a strip of paper
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) time to reach the floor (c) the person dropping
8. 8.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it turns blue (c) it spins the other way (d) it falls upward
9. 9.True or false: sugar left unstirred dissolves slower. (a) False (b) True
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) turmeric powder (d) a clear glass of water
12. 12.True or false: a glass marble is denser than water. (a) False (b) True
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) turmeric powder (d) a towel
14. 14.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a ruler (c) a balloon (d) a pencil
15. 15.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a rubber eraser (c) a steel spoon (d) a glass marble
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) True (b) False
17. 17.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) False (b) True
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🚀 Which of these goes forward? (a) air from the balloon (b) the balloon (c) water from the oars (d) gas from the rocket
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
22. 22.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a towel for spills (c) a results table (d) small test objects
24. 24.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they separate again (c) they turn to honey (d) they become solid
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a battery cell (d) a clear glass of water
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is what we measure. (a) True (b) False
27. 27.🌈 How many colours do we name in a rainbow (VIBGYOR)?
28. 28.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
29. 29.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
30. 30.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
32. 32.True or false: a magnet is needed for the density tower. (a) False (b) True
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
34. 34.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
35. 35.🔍 Which is the odd one out? (a) a misty bathroom mirror (b) drops on a cold glass (c) drops under a pot lid (d) a puddle drying up
36. 36.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🫗 Why does cooking oil float on top of water? (a) oil is less dense (b) oil is heavier (c) oil is sticky (d) oil is hot
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) turmeric powder (c) a tub of water (d) a results table
39. 39.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) a mirror

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