Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 868 · 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.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a long string (c) a balloon (d) a drinking straw
2. 2.⚖️ 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 the one thing we change. (a) False (b) True
3. 3.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) ice cubes (c) a small cup (d) a battery cell
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a mirror
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
7. 7.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
8. 8.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
9. 9.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it still floats (d) it sinks
10. 10.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water can scald (d) hot water is magnetic
11. 11.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it turns blue (d) it floats higher
12. 12.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
13. 13.⚖️ 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 three liquids is kept the same. (a) True (b) False
14. 14.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
16. 16.🍯 Which of these is less dense than water? (a) an ice cube (b) a pebble (c) a glass marble (d) very salty water
17. 17.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a feather (b) a steel spoon (c) an empty capped bottle (d) a dry leaf
19. 19.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
21. 21.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a magnet (c) a mirror (d) a results table
22. 22.🌈 How many colours do we name in a rainbow (VIBGYOR)?
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it through glass (d) look at it in a mirror
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a towel (d) a sink or a bucket
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a magnet (d) a glass of water
26. 26.🧺 Which of these is needed for the dissolving test? (a) warm water (b) a balloon (c) honey (d) a mirror
27. 27.⚖️ 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 measure it (b) we keep it the same (c) we change it
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🧺 Which of these is needed for the balloon rocket? (a) a balloon (b) a magnet (c) yeast (d) turmeric powder
30. 30.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
31. 31.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is magnetic (c) ice is less dense (d) water is sticky
32. 32.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
33. 33.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a flower stem (d) a piece of foil
34. 34.⚖️ 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) False (b) True
35. 35.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) under the honey (c) on top of the oil (d) in the honey layer
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.💧 Which change is this: drops under a pot lid? (a) condensation (b) freezing (c) evaporation (d) melting
38. 38.🔍 Which is the odd one out? (a) making ice lollies (b) water becoming ice (c) a pond icing over (d) wet clothes drying
39. 39.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the length of the stem (b) the amount of colour (c) the kind of flower (d) the amount of water

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