Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 301 · 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: cling film is not needed for the water cycle bowl. (a) False (b) True
2. 2.⚖️ 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 keep it the same (c) we change it
3. 3.True or false: sugar in icy water dissolves slower. (a) False (b) True
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) distance it travels (c) the same tape (d) the same straw
5. 5.True or false: food colour does not dissolve in water. (a) True (b) False
6. 6.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) safety scissors (c) a pencil (d) yeast
7. 7.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) False (b) True
9. 9.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
11. 11.True or false: a coin is denser than water. (a) False (b) True
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same straw (b) distance it travels (c) how big we blow it
13. 13.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
15. 15.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a strip of cloth (d) a plastic ruler
16. 16.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a mirror (c) cold water (d) a balloon
17. 17.True or false: a mirror is needed for the dissolving test. (a) True (b) False
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a sink or a bucket (d) a glass of water
19. 19.📘 What pulls the paper helicopter down to the floor? (a) air pressure (b) magnetism (c) the wind (d) gravity
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) turmeric powder (d) a drinking straw
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
22. 22.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a mirror (c) two chairs (d) vinegar
24. 24.True or false: a small cup is not needed for the water cycle bowl. (a) False (b) True
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same tape (c) distance it travels (d) the same straw
26. 26.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
27. 27.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
28. 28.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
29. 29.True or false: sugar in warm water dissolves faster. (a) False (b) True
30. 30.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil makes it rain (c) oil turns into honey (d) oil attracts magnets
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same glass (b) the way we turn it (c) whether the card stays (d) the same card
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
34. 34.True or false: yeast is needed for the balloon rocket. (a) False (b) True
35. 35.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny drops of water (d) tiny bits of dust
36. 36.True or false: a balloon is not needed for the paper helicopter. (a) True (b) False
37. 37.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) a magnet (d) warm water
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) the kind of flower (c) time for colour to show (d) the amount of colour
40. 40.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward

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