Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 843 · 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 not needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a sink or a bucket (d) a towel
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) True (b) False
3. 3.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
4. 4.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) play near a deep pond (d) leave water on the floor
5. 5.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) ice becoming water (b) a misty bathroom mirror (c) snow turning to water (d) butter going runny
7. 7.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
8. 8.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they fall off at once (d) they stay white
9. 9.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
11. 11.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
12. 12.💧 Which change is this: water becoming ice? (a) melting (b) condensation (c) freezing (d) evaporation
13. 13.True or false: a big bowl is needed for the water cycle bowl. (a) True (b) False
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the kind of sugar (b) time to dissolve (c) the water temperature
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🍯 Which of these is less dense than water? (a) very salty water (b) a pebble (c) honey (d) cooking oil
18. 18.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) turmeric powder (c) a battery cell (d) a magnet
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a clock or timer (c) a magnet (d) cold water
20. 20.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) lightning (c) sunshine (d) rain
21. 21.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
22. 22.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a balloon (c) a drinking straw (d) a long string
24. 24.🧺 Which of these is needed for the density tower? (a) a spoon (b) yeast (c) a balloon (d) turmeric powder
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a battery cell (c) a balloon (d) a strip of paper
27. 27.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
28. 28.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) the stem is hot (d) petals like colour
29. 29.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
30. 30.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to make it rain (d) to cool the glass
32. 32.⚖️ 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 order of pouring (b) the same three liquids (c) the same glass (d) the order of the layers
33. 33.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) False (b) True
34. 34.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
35. 35.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) under the honey (d) on top of the oil
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
39. 39.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to keep children safe (d) to win a prize
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True

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