Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 434 · 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.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.⚖️ 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 the one thing we change. (a) False (b) True
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
4. 4.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a battery cell (d) yeast
5. 5.🛟 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
6. 6.🔍 Which is the odd one out? (a) small pebbles (b) baking soda (c) food colour (d) table salt
7. 7.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
9. 9.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
10. 10.True or false: making ice lollies is evaporation. (a) False (b) True
11. 11.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the big log (c) neither of them (d) the small pebble
12. 12.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a battery cell (c) a ruler (d) a strip of paper
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the amount of clay
14. 14.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
15. 15.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) a mirror (c) a battery cell (d) turmeric powder
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) a sink or a bucket (d) a towel
17. 17.🍯 Is air denser or less dense than water? (a) less dense than water (b) denser than water
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a coin (c) a ping-pong ball (d) a metal key
19. 19.True or false: snow turning to water is freezing. (a) False (b) True
20. 20.⚖️ 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
21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of water (c) the stirring (d) the amount of sugar
22. 22.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
23. 23.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
24. 24.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
25. 25.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) safety scissors (d) a paper cutter
26. 26.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
27. 27.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
28. 28.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) snow falling (d) a small rainbow
29. 29.💧 Which change is this: a puddle drying up? (a) freezing (b) evaporation (c) melting (d) condensation
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) time to dissolve (c) the stirring (d) the amount of sugar
31. 31.🍯 Which of these is denser than water? (a) cooking oil (b) an ice cube (c) a pebble (d) a ping-pong ball
32. 32.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) a tall clear glass (c) a spoon (d) cooking oil
33. 33.🌈 How many colours do we name in a rainbow (VIBGYOR)?
34. 34.⚖️ 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 kept the same. (a) True (b) False
35. 35.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a bicycle pump
36. 36.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) no change at all (c) it goes faster (d) more friction, less far
38. 38.⚖️ 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 pouring”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) it has a magnet (d) its hollow shape
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the length of the blades (b) the paper clip (c) time to reach the floor (d) the drop height

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