Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 519 · 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.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes less far (d) it goes much farther
2. 2.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
5. 5.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) throw them away safely (c) chew them (d) keep them in your mouth
6. 6.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) True (b) False
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 white paper”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) whether the card stays (c) the same card (d) the way we turn it
10. 10.🍯 Which of these is denser than water? (a) cooking oil (b) a cork (c) a ping-pong ball (d) honey
11. 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a magnet (d) a long string
12. 12.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🚁 Which of these falls slowly through the air? (a) a coin (b) a paper helicopter (c) a crumpled paper ball (d) a stone
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a white flower
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
16. 16.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is very cold (c) ice is less dense (d) water is sticky
17. 17.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
18. 18.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a bicycle pump
19. 19.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the order of pouring (c) how much of each liquid
20. 20.🔍 Which is the odd one out? (a) drops under a pot lid (b) making ice lollies (c) drops on a cold glass (d) dew on morning grass
21. 21.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
22. 22.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) turmeric powder (d) a sunny window
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a clock or timer (c) honey (d) warm water
24. 24.🔍 Which is the odd one out? (a) water becoming ice (b) snow turning to water (c) butter going runny (d) ice becoming water
25. 25.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
26. 26.💧 Which change is this: sweat drying on skin? (a) freezing (b) melting (c) condensation (d) evaporation
27. 27.True or false: cooking oil is needed for the density tower. (a) True (b) False
28. 28.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) two chairs (c) a magnet (d) a mirror
29. 29.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the order of the layers (c) the same glass (d) the order of pouring
30. 30.True or false: a piece of foil lets water climb up it. (a) True (b) False
31. 31.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) turmeric powder (d) yeast
32. 32.🧺 Which of these is not needed for the paper helicopter? (a) yeast (b) safety scissors (c) a strip of paper (d) a pencil
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a mirror
34. 34.⚖️ 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) False (b) True
35. 35.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a few hours of waiting (d) food colour
38. 38.🛟 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) run around the tub (d) wipe up spills at once
39. 39.📘 What pulls the paper helicopter down to the floor? (a) the wind (b) gravity (c) magnetism (d) air pressure
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we keep it the same (c) we measure it

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