Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 613 · 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.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) how big we blow it (c) distance it travels (d) the same straw
2. 2.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it falls upward (c) it does not fall (d) it turns blue
3. 3.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to win a prize (c) to keep children safe (d) to hide the corks
4. 4.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a magnet (c) a mirror (d) sunlight
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 kind of clay (c) whether it floats (d) the shape of the clay
6. 6.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.True or false: a medicine dropper works by air pressure. (a) False (b) True
9. 9.⚖️ 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
10. 10.🧺 Do we need sunlight for the water cycle bowl? (a) needed (b) not needed
11. 11.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
12. 12.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) a ruler (c) a strip of paper (d) safety scissors
13. 13.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.🔍 Which is the odd one out? (a) a ball of clay (b) a coin (c) a metal key (d) a dry leaf
15. 15.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) taste it (d) poke it with a finger
17. 17.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) cold water is wet (c) particles move faster (d) sugar likes the dark
18. 18.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) many colours mixed (d) tiny bits of dust
19. 19.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil turns into honey (c) oil attracts magnets (d) oil makes it rain
20. 20.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
21. 21.⚖️ 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 change it (c) we measure it
22. 22.💧 Which of these is freezing? (a) snow turning to water (b) dew on morning grass (c) wet hair drying (d) water becoming ice
23. 23.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it can float (c) it sinks faster (d) it dissolves
24. 24.💧 Which of these is evaporation? (a) water becoming ice (b) wet clothes drying (c) making ice lollies (d) snow turning to water
25. 25.True or false: sugar in warm water dissolves faster. (a) True (b) False
26. 26.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an ice cube (c) a coin (d) a cork
27. 27.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it turns into a ball (c) it flies upward (d) it stays still in air
28. 28.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a cotton thread
30. 30.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
32. 32.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
33. 33.💧 Which of these is condensation? (a) a pond icing over (b) wet clothes drying (c) making ice lollies (d) drops under a pot lid
34. 34.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) pour it on the floor (c) do not lick the spoon (d) taste each layer
35. 35.🧺 Which of these is needed for the density tower? (a) yeast (b) honey (c) a magnet (d) a battery cell
36. 36.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) yeast (d) a clear glass of water
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a few hours of waiting (d) a glass of water
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a sheet of white paper (d) a clear glass of water
40. 40.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) the order of the layers (c) the order of pouring (d) the same glass

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