Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 574 · 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 piece of chalk (b) a rubber eraser (c) a paper towel (d) a sugar cube
2. 2.True or false: a paper clip is needed for the paper helicopter. (a) True (b) False
3. 3.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) turmeric powder (c) a balloon (d) a strip of paper
4. 4.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the amount of clay (c) whether it floats (d) the shape of the clay
6. 6.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is magnetic (c) ice is less dense (d) ice is very cold
7. 7.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
8. 8.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) True (b) False
10. 10.⚖️ 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 the one thing we change. (a) False (b) True
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a few hours of waiting (d) a white flower
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is kept the same. (a) False (b) True
13. 13.⚖️ 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
14. 14.True or false: the balloon goes backward. (a) False (b) True
15. 15.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) ice cubes (c) cling film (d) a battery cell
16. 16.True or false: a ping-pong ball is less dense than water. (a) False (b) True
17. 17.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
18. 18.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
19. 19.💧 Which of these is evaporation? (a) a misty bathroom mirror (b) drops on a cold glass (c) a puddle drying up (d) water becoming ice
20. 20.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a strip of cloth (d) a paper towel
21. 21.🛟 Which of these sinks in water? (a) a cork (b) a feather (c) a piece of thermocol (d) a glass marble
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
23. 23.⚖️ 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
24. 24.🛟 Which of these floats on water? (a) a metal key (b) a piece of thermocol (c) a ball of clay (d) a glass marble
25. 25.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond
26. 26.💧 Which change is this: wet clothes drying? (a) melting (b) condensation (c) evaporation (d) freezing
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the same string (c) how big we blow it (d) the same straw
28. 28.True or false: a toy parachute falls slowly through the air. (a) True (b) False
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) food colour (d) yeast
32. 32.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) it rains on them (d) through the air
33. 33.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the stickiest (c) it is the densest (d) it is the coldest
34. 34.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the big log (d) the small pebble
35. 35.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) cooking oil (c) the spoon (d) honey
36. 36.True or false: sugar is not needed for the dissolving test. (a) True (b) False
37. 37.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) the water turns red (c) the bowl freezes (d) fewer drops form
38. 38.True or false: a dry leaf sinks in water. (a) False (b) True
39. 39.True or false: gas from the rocket goes forward. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) an empty capped bottle (b) a piece of thermocol (c) a glass marble (d) a ping-pong ball

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