Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 690 · 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.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
3. 3.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) neither of them (d) powdered sugar
4. 4.True or false: cooking oil is denser than water. (a) False (b) True
5. 5.🥄 Which of these dissolves in water? (a) sand (b) sawdust (c) glucose powder (d) chalk powder
6. 6.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) two chairs (c) sticky tape (d) a long string
8. 8.True or false: yeast is not needed for the density tower. (a) True (b) False
9. 9.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) butter going runny (b) snow turning to water (c) water becoming ice (d) ice becoming water
11. 11.True or false: a cork is denser than water. (a) False (b) True
12. 12.True or false: a compass needle works by air pressure. (a) False (b) True
13. 13.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.🥄 Which of these does not dissolve in water? (a) baking soda (b) sand (c) food colour (d) glucose powder
15. 15.🍯 Which of these is less dense than water? (a) honey (b) air (c) a coin (d) a pebble
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
17. 17.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an ice cube (c) a dry leaf (d) a metal key
18. 18.⚖️ 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 glass (b) the order of the layers (c) the same three liquids (d) the order of pouring
19. 19.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a magnet
21. 21.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it can pop loudly (c) it changes colour (d) it gets too heavy
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the kind of flower (c) the length of the stem (d) the amount of water
23. 23.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
24. 24.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
25. 25.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a sunny window (d) a clear glass of water
27. 27.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
28. 28.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls slowly (b) falls fast
29. 29.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
30. 30.📘 What is the push of air on a falling thing called? (a) magnetism (b) floating (c) air resistance (d) dissolving
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.⚖️ 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 keep it the same (c) we change it
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
34. 34.True or false: a fluff of cotton falls fast through the air. (a) False (b) True
35. 35.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) taste each layer (d) pour it on the floor
36. 36.⚖️ 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 keep it the same (b) we change it (c) we measure it
37. 37.True or false: a medicine dropper works by air pressure. (a) True (b) False
38. 38.True or false: a puddle drying up is condensation. (a) True (b) False
39. 39.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to keep children safe (d) to win a prize
40. 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) sticky tape (c) a balloon (d) a drinking straw

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