Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 261 · 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 drinking straw (b) a suction hook (c) a magnetic chess set (d) a medicine dropper
2. 2.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) turmeric powder (b) ice cubes (c) water (d) sunlight
3. 3.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the stickiest (c) it is yellow (d) it is the densest
4. 4.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) cotton wool (d) two clear glasses
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) reflection (d) evaporation
7. 7.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
8. 8.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
9. 9.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it still floats (c) it dissolves (d) it turns white
10. 10.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
11. 11.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
12. 12.⚖️ 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) how much of each liquid (b) the order of pouring (c) the order of the layers (d) the same three liquids
13. 13.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
14. 14.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) small test objects (c) turmeric powder (d) yeast
15. 15.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) particles move faster (c) warm water is thicker (d) sugar likes the dark
16. 16.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the air above (d) the cork itself
17. 17.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) sea water is warm (d) it has a magnet
18. 18.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil makes it rain (c) spilled oil is slippery (d) oil attracts magnets
19. 19.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
20. 20.True or false: wet hair drying is evaporation. (a) False (b) True
21. 21.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
22. 22.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) honey (c) sugar (d) a teaspoon
24. 24.True or false: the rowing boat goes forward. (a) False (b) True
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) ice becoming water (b) sweat drying on skin (c) wet hair drying (d) a puddle drying up
27. 27.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) ice cubes (c) a magnet (d) a balloon
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.🔮 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) on top of the oil (d) in the oil layer
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same glass (b) brightness of rainbow (c) the amount of water
31. 31.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) a magnet (c) a mirror (d) yeast
32. 32.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) True (b) False
33. 33.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) a small cup (c) water (d) cling film
34. 34.🚀 Which of these goes backward? (a) the rocket (b) the swimmer (c) the balloon (d) air from the balloon
35. 35.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) False (b) True
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) it stops in the air (c) slower (d) faster
39. 39.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
40. 40.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True

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