Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 492 · 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 of these is needed for the dissolving test? (a) cotton wool (b) a clock or timer (c) a mirror (d) a comb
2. 2.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
3. 3.True or false: a drinking straw works by magnetism. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) an empty capped bottle (b) an ice-cream stick (c) an iron nail (d) a cork
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) False (b) True
7. 7.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) throw them away safely (c) chew them (d) keep them in your mouth
8. 8.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
9. 9.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) behind you (d) in front of you
10. 10.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
11. 11.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
12. 12.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a glass marble (d) a rubber eraser
13. 13.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
14. 14.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls slowly (b) falls fast
15. 15.🔍 Which is the odd one out? (a) a paper helicopter (b) an open sheet of paper (c) a fluff of cotton (d) a coin
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.💧 Which of these is freezing? (a) a pond icing over (b) dew on morning grass (c) sweat drying on skin (d) wet hair drying
18. 18.🔍 Which is the odd one out? (a) a coin (b) a cork (c) very salty water (d) a pebble
19. 19.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
20. 20.⚖️ 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) time to dissolve (d) the amount of water
21. 21.💧 Which change is this: ice becoming water? (a) condensation (b) freezing (c) evaporation (d) melting
22. 22.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) warm water (c) sugar (d) honey
24. 24.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a glass of water
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) how many drops form (b) the cling film cover (c) sun or shade (d) the size of the bowl
30. 30.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
31. 31.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) the sugar cube (d) powdered sugar
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) a battery cell (d) small test objects
33. 33.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.⚖️ 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
35. 35.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) at the very bottom (c) in the oil layer (d) on top of the oil
36. 36.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) baking soda (d) sawdust
37. 37.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) faster (c) they never dry (d) they turn to ice
38. 38.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a stone (b) a steel spoon (c) a feather (d) a glass marble
40. 40.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) warm water is thicker (c) sugar likes the dark (d) cold water is wet

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