Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 84 · 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: a flower stem does not let water climb. (a) False (b) True
2. 2.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a mirror (c) a results table (d) small test objects
5. 5.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a small cup (c) yeast (d) ice cubes
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a balloon (d) a tub of water
7. 7.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) all of it dissolves (c) the water turns solid (d) the sugar turns to salt
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it stays still in air (c) it flies upward (d) it spins round
10. 10.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the stickiest (c) it is the densest (d) it is yellow
11. 11.True or false: yeast is not needed for the paper helicopter. (a) True (b) False
12. 12.⚖️ 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 cling film cover (c) sun or shade (d) the amount of water
13. 13.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the way we turn it (b) the same glass (c) the same card (d) how full the glass is
16. 16.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
17. 17.True or false: a mirror is needed for the balloon rocket. (a) False (b) True
18. 18.⚖️ 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 change it (c) we keep it the same
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 change it (b) we keep it the same (c) we measure it
20. 20.True or false: gas from the rocket goes backward. (a) True (b) False
21. 21.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) turmeric powder (d) yeast
23. 23.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a magnet (c) cling film (d) a big bowl
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
26. 26.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
27. 27.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) they never dry (c) slower (d) faster
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
29. 29.True or false: a crumpled paper ball falls slowly through the air. (a) True (b) False
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a balloon (d) a glass of water
31. 31.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
32. 32.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
33. 33.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to splash everyone (d) to win a prize
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) cooking oil (c) water with food colour (d) a magnet
35. 35.True or false: air from the balloon goes forward. (a) False (b) True
36. 36.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
37. 37.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a steel spoon (d) a sugar cube
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a battery cell (c) a towel for spills (d) a tub of water
39. 39.🧺 Which of these is not needed for the water cycle bowl? (a) yeast (b) water (c) a big bowl (d) sunlight
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) small test objects (d) a mirror

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