Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 947 · 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 denser than water? (a) very salty water (b) a ping-pong ball (c) cooking oil (d) air
2. 2.🧺 Which of these is not needed for the density tower? (a) honey (b) a spoon (c) cooking oil (d) a balloon
3. 3.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) warm water (c) a mirror (d) sugar
5. 5.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.🧺 Which of these is needed for the density tower? (a) cooking oil (b) a magnet (c) turmeric powder (d) a balloon
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the amount of sugar (c) the stirring (d) the water temperature
9. 9.🔍 Which is the odd one out? (a) an open sheet of paper (b) a feather (c) a crumpled paper ball (d) a fluff of cotton
10. 10.🚁 Which of these falls fast through the air? (a) a feather (b) an open sheet of paper (c) a toy parachute (d) a crumpled paper ball
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
12. 12.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
13. 13.💧 Which change is this: drops on a cold glass? (a) melting (b) freezing (c) condensation (d) evaporation
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) cling film (c) ice cubes (d) a small cup
15. 15.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
16. 16.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it turns blue (d) it sinks
17. 17.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond
18. 18.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) ice cubes (c) a mirror (d) a big bowl
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels less far (d) it travels farther
21. 21.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) do not lick the spoon (d) throw the glass
22. 22.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.⚖️ 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) the cling film cover (b) sun or shade (c) how many drops form (d) the time we wait
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the length of the blades (c) the drop height
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) turmeric powder (d) a mirror
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.⚖️ 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) False (b) True
29. 29.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) on top of the oil (c) in the honey layer (d) in the water layer
30. 30.True or false: a feather floats on water. (a) False (b) True
31. 31.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) powdered sugar
32. 32.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
33. 33.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the paper makes colours (d) the glass is painted
34. 34.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a mirror (c) a tub of water (d) a balloon
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the amount of water (b) the time we wait (c) sun or shade (d) how many drops form
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
37. 37.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
38. 38.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
39. 39.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a magnet (d) safety scissors
40. 40.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats

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