Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 477 · 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: table salt does not dissolve in water. (a) True (b) False
2. 2.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
3. 3.True or false: turmeric powder is needed for the paper helicopter. (a) False (b) True
4. 4.🧺 Do we need a magnet for the paper helicopter? (a) needed (b) not needed
5. 5.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
7. 7.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) the bowl freezes (c) fewer drops form (d) the water turns red
8. 8.🎈 When does the balloon rocket stop? (a) when it turns blue (b) it never stops (c) when it gets cold (d) when the air runs out
9. 9.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
10. 10.🌈 In VIBGYOR, what number colour is green?
11. 11.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) sand (d) table salt
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) food colour (d) a white flower
13. 13.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) a big sugar cube
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
16. 16.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a paper towel (d) a piece of chalk
17. 17.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
18. 18.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) taste it (d) look for leftover grains
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🛟 Which of these sinks in water? (a) a dry leaf (b) a ping-pong ball (c) a steel spoon (d) a feather
21. 21.True or false: an iron nail floats on water. (a) False (b) True
22. 22.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
23. 23.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the time of day (b) the same white paper (c) the amount of water (d) the same window
25. 25.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
26. 26.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) powdered sugar (d) sugar left unstirred
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
28. 28.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: sugar in warm water dissolves slower. (a) False (b) True
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the tub of water
31. 31.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) pour it on the floor (d) do not lick the spoon
32. 32.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
34. 34.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
35. 35.🌈 In VIBGYOR, what number colour is orange?
36. 36.True or false: powdered sugar dissolves slower. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a sugar cube (d) a piece of chalk
38. 38.True or false: small pebbles does not dissolve in water. (a) False (b) True
39. 39.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a clock or timer (c) honey (d) warm water
40. 40.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a steel spoon (d) a rubber eraser

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