Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 830 · 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: baking soda does not dissolve in water. (a) True (b) False
2. 2.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) table salt (d) cooking oil
3. 3.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a magnetic chess set (d) a suction hook
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) sticky tape (d) a magnet
5. 5.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) gardening shears (d) sharp kitchen shears
6. 6.True or false: an open sheet of paper falls fast through the air. (a) True (b) False
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the shape of the clay (c) whether it floats (d) the tub of water
8. 8.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) not at all (d) faster
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) the shape of the clay (c) whether it floats (d) the tub of water
10. 10.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) it changes colour (c) hot water is magnetic (d) hot water is heavy
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
13. 13.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it blows air in (c) it holds water (d) it guides the balloon
14. 14.💧 Which change is this: snow turning to water? (a) evaporation (b) freezing (c) melting (d) condensation
15. 15.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a paper clip (c) safety scissors (d) a magnet
16. 16.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar stirred well (c) a big sugar cube (d) sugar in icy water
17. 17.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
18. 18.⚖️ 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
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same white paper (c) the amount of water (d) the same window
20. 20.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) water is sticky (d) ice is very cold
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a balloon
22. 22.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a strip of cloth (d) a piece of chalk
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
24. 24.True or false: a ball of clay sinks in water. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) food colour (d) sugar
26. 26.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) the crumpled ball (c) the flat sheet (d) a sheet of glass
27. 27.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) water (c) yeast (d) turmeric powder
28. 28.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water
29. 29.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
31. 31.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a magnet (c) honey (d) a teaspoon
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) True (b) False
33. 33.True or false: drops under a pot lid is condensation. (a) True (b) False
34. 34.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) sugar likes the dark (c) warm water is thicker (d) particles move faster
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is kept the same. (a) False (b) True
37. 37.True or false: a fluff of cotton falls fast through the air. (a) True (b) False
38. 38.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) True (b) False
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) a teaspoon (c) a clock or timer (d) sugar

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