Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 384 · 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: ice cubes is needed for the water cycle bowl. (a) False (b) True
2. 2.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) steel is very light (c) its hollow shape (d) it has a magnet
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a long string (c) two chairs (d) turmeric powder
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
7. 7.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
8. 8.True or false: turmeric powder is not needed for the density tower. (a) False (b) True
9. 9.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a balloon (d) a battery cell
10. 10.⚖️ 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 change it (b) we measure it (c) we keep it the same
11. 11.True or false: the balloon goes backward. (a) False (b) True
12. 12.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
13. 13.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
14. 14.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls slowly (b) falls fast
15. 15.🚀 Which of these goes forward? (a) gas from the rocket (b) the rowing boat (c) water a swimmer pushes (d) water from the oars
16. 16.True or false: a paper towel lets water climb up it. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) ice becoming water (b) a puddle drying up (c) snow turning to water (d) butter going runny
18. 18.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) table salt (d) sawdust
19. 19.🍯 Which of these is denser than water? (a) honey (b) a cork (c) cooking oil (d) a ping-pong ball
20. 20.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
21. 21.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same string (c) the slope of the string (d) the same tape
24. 24.💧 Which of these is melting? (a) wet clothes drying (b) wet hair drying (c) water becoming ice (d) snow turning to water
25. 25.💧 Which of these is freezing? (a) drops under a pot lid (b) butter going runny (c) wet hair drying (d) making ice lollies
26. 26.🛟 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
27. 27.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
28. 28.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
29. 29.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) sugar (d) honey
31. 31.🚁 Which of these falls slowly through the air? (a) a toy parachute (b) a stone (c) a crumpled paper ball (d) a steel spoon
32. 32.🚁 Which of these falls fast through the air? (a) a glass marble (b) a fluff of cotton (c) a feather (d) a toy parachute
33. 33.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns brighter (d) it turns all red
35. 35.True or false: sugar is needed for the dissolving test. (a) False (b) True
36. 36.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) safety scissors (c) a ruler (d) a strip of paper
37. 37.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
38. 38.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) the time we wait (c) sun or shade
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it

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