Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 42 · 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.🔍 Which is the odd one out? (a) cooking oil (b) air (c) a cork (d) a pebble
2. 2.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) a mirror (c) a ruler (d) turmeric powder
3. 3.🧺 Do we need turmeric powder for the water cycle bowl? (a) not needed (b) needed
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) yeast (d) a few hours of waiting
5. 5.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a fridge magnet
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) a magnet (d) a stiff postcard
7. 7.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it speeds up (c) it travels farther (d) it goes backward first
8. 8.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) yeast (c) sunlight (d) a small cup
10. 10.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
11. 11.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
12. 12.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of pouring (b) how much of each liquid (c) the order of the layers (d) the same glass
14. 14.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it does not fall (d) so it turns blue
15. 15.🌈 In VIBGYOR, what number colour is green?
16. 16.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
17. 17.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.True or false: a piece of chalk lets water climb up it. (a) True (b) False
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the length of the blades (b) the person dropping (c) the kind of paper (d) time to reach the floor
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) time to reach the floor (b) the length of the blades (c) the person dropping (d) the drop height
21. 21.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a teaspoon (c) cold water (d) a mirror
22. 22.🧊 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
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a drinking straw (c) a balloon (d) sticky tape
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.True or false: a mirror is not needed for the paper helicopter. (a) False (b) True
26. 26.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the water layer (c) in the honey layer (d) on top of the oil
27. 27.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) a magnet (d) cooking oil
30. 30.True or false: a ping-pong ball is less dense than water. (a) True (b) False
31. 31.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) the same string (c) distance it travels
33. 33.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a mirror (c) a sheet of white paper (d) a clear glass of water
34. 34.True or false: yeast is not needed for the water rainbow. (a) False (b) True
35. 35.💧 Which change is this: sweat drying on skin? (a) freezing (b) condensation (c) evaporation (d) melting
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
37. 37.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) safety scissors (d) a magnet
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
40. 40.🧺 Do we need a mirror for the water cycle bowl? (a) not needed (b) needed

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