Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 547 · 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) a plastic ruler (b) a cotton thread (c) a flower stem (d) a piece of chalk
2. 2.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
3. 3.🛟 Which of these sinks in water? (a) a cork (b) a glass marble (c) an ice-cream stick (d) a feather
4. 4.True or false: a glass marble is denser than water. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a strip of cloth (d) a glass marble
6. 6.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
7. 7.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it travels less far (d) it speeds up
8. 8.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a toy parachute (c) a coin (d) a stone
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) how big we blow it (c) distance it travels (d) the slope of the string
10. 10.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
11. 11.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the rocket (c) the balloon (d) the rowing boat
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the tub of water (c) the shape of the clay (d) the amount of clay
13. 13.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) in the water layer (c) at the very bottom (d) on top of the oil
14. 14.🧺 Which of these is not needed for the water cycle bowl? (a) a magnet (b) sunlight (c) ice cubes (d) a big bowl
15. 15.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) how many drops form (b) the size of the bowl (c) sun or shade (d) the amount of water
17. 17.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.True or false: honey is denser than water. (a) False (b) True
20. 20.🔮 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
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) turmeric powder (c) a magnet (d) a long string
23. 23.⚖️ 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 what we measure. (a) True (b) False
24. 24.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
25. 25.🚁 Dropped from a raised hand, does a fluff of cotton fall slowly or fast? (a) falls fast (b) falls slowly
26. 26.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) turmeric powder (b) water (c) a small cup (d) cling film
27. 27.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a plastic ruler (d) a piece of foil
28. 28.🍯 Which of these is less dense than water? (a) cooking oil (b) a pebble (c) a glass marble (d) a coin
29. 29.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) it stops in the air (c) it floats up (d) slower
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
31. 31.⚖️ 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 same glass (b) the same three liquids (c) the order of pouring (d) the order of the layers
32. 32.True or false: cooking oil is not needed for the density tower. (a) False (b) True
33. 33.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
34. 34.True or false: an open sheet of paper falls slowly through the air. (a) True (b) False
35. 35.True or false: yeast is not needed for the density tower. (a) False (b) True
36. 36.True or false: turmeric powder is not needed for the water cycle bowl. (a) False (b) True
37. 37.🥄 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) table salt (d) sawdust
38. 38.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
39. 39.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
40. 40.🌈 How many colours do we name in a rainbow (VIBGYOR)?

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