Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 259 · 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: a medicine dropper works by magnetism. (a) False (b) True
2. 2.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is what we measure. (a) True (b) False
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the water temperature (c) time to dissolve (d) the amount of water
4. 4.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a long string (c) yeast (d) vinegar
5. 5.🔍 Which is the odd one out? (a) a toy parachute (b) an open sheet of paper (c) a feather (d) a coin
6. 6.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) faster (c) slower (d) it floats up
7. 7.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) it looks nicer (d) little air left inside
8. 8.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
9. 9.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a glass of water (d) a few hours of waiting
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) honey (c) a tall clear glass (d) a magnet
13. 13.True or false: gas from the rocket goes forward. (a) False (b) True
14. 14.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
17. 17.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a strip of paper (c) a paper clip (d) safety scissors
19. 19.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
20. 20.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it sinks (c) it turns blue (d) it melts
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.💧 Which change is this: a puddle drying up? (a) melting (b) condensation (c) freezing (d) evaporation
23. 23.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a drinking straw (d) a medicine dropper
24. 24.💧 Which of these is evaporation? (a) wet clothes drying (b) ice becoming water (c) water becoming ice (d) a pond icing over
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a balloon
26. 26.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) it has no weight (c) air pushes on its blades (d) the floor pushes it
27. 27.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a piece of chalk
28. 28.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a battery cell (c) a tall clear glass (d) cooking oil
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a towel (c) a stiff postcard (d) a glass of water
31. 31.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it gets too heavy (c) it can pop loudly (d) it turns into a kite
32. 32.⚖️ 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 same glass”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) water with food colour (c) a spoon (d) a battery cell
34. 34.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) many colours mixed (d) only yellow light
35. 35.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) neither of them (c) both of them (d) the small pebble
36. 36.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) the flat sheet (c) neither of them (d) a sheet of glass
37. 37.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a results table (d) a balloon
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) small test objects (c) a towel for spills (d) a tub of water
40. 40.True or false: water is not needed for the water cycle bowl. (a) True (b) False

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