Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 355 · 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 feather floats on water. (a) False (b) True
2. 2.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) a little shaking (d) lots of salt stirred in
3. 3.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) the same three liquids (c) how much of each liquid (d) the order of pouring
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) False (b) True
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) whether it floats (c) the amount of clay (d) the kind of clay
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a magnet (c) a balloon (d) a long string
9. 9.🚁 Which of these falls slowly through the air? (a) a glass marble (b) a steel spoon (c) a toy parachute (d) a stone
10. 10.🫗 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
11. 11.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
12. 12.🛟 Does a cork float or sink in water? (a) sinks (b) floats
13. 13.True or false: a medicine dropper works by magnetism. (a) False (b) True
14. 14.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a magnet
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a metal key (c) a glass marble (d) a piece of thermocol
19. 19.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
20. 20.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) friction (d) sunlight
21. 21.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a small cup (c) water (d) turmeric powder
22. 22.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) an ice cube (c) a cork (d) an empty capped bottle
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a sunny window (d) a clear glass of water
25. 25.True or false: sugar in icy water dissolves faster. (a) True (b) False
26. 26.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
28. 28.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar stirred well (c) sugar in icy water (d) sugar left unstirred
29. 29.🛟 Which of these sinks in water? (a) a feather (b) a pebble (c) an empty capped bottle (d) an ice cube
30. 30.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a battery cell (c) a pencil (d) a ruler
31. 31.🥄 Which of these dissolves in water? (a) sand (b) chalk powder (c) cooking oil (d) glucose powder
32. 32.🍯 Which of these is denser than water? (a) an ice cube (b) a pebble (c) cooking oil (d) a cork
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the person dropping (b) time to reach the floor (c) the kind of paper (d) the length of the blades
34. 34.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
35. 35.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
36. 36.🧺 Which of these is needed for the paper helicopter? (a) a strip of paper (b) a magnet (c) turmeric powder (d) a battery cell
37. 37.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a fridge magnet (d) a suction hook
38. 38.💧 Which of these is condensation? (a) butter going runny (b) snow turning to water (c) drops on a cold glass (d) making ice lollies
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sunny window (d) a sheet of white paper
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) the stirring (c) the amount of sugar (d) time to dissolve

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