Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 890 · 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.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
2. 2.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) gardening shears (d) a paper cutter
3. 3.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
4. 4.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
5. 5.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it travels less far (d) it speeds up
6. 6.⚖️ 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 measure it (c) we change it
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) False (b) True
10. 10.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to drops (b) it turns to smoke (c) it disappears (d) it turns to salt
11. 11.🔍 Which is the odd one out? (a) an ice cube (b) a piece of thermocol (c) an iron nail (d) a cork
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the amount of water (c) time for colour to show
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) a drinking straw (d) turmeric powder
14. 14.🧺 Which of these is needed for the dissolving test? (a) honey (b) a balloon (c) a magnet (d) sugar
15. 15.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the air above (d) the tub
17. 17.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a battery cell (c) a paper clip (d) a magnet
18. 18.🔍 Which is the odd one out? (a) table salt (b) sand (c) glucose powder (d) baking soda
19. 19.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
20. 20.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
21. 21.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a long string (c) a battery cell (d) a balloon
22. 22.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
23. 23.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
24. 24.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a magnet (d) a small rainbow
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) honey (d) a glass marble
27. 27.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) throw them away safely (d) chew them
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
29. 29.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) at the very bottom (d) in the oil layer
30. 30.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
31. 31.🔍 Which is the odd one out? (a) very salty water (b) a cork (c) an ice cube (d) cooking oil
32. 32.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a results table (c) a towel for spills (d) a tub of water
34. 34.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) aim it at your friend (c) keep it away from faces (d) blow it till it bursts
35. 35.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a piece of foil (d) a piece of chalk
36. 36.True or false: sweat drying on skin is condensation. (a) False (b) True
37. 37.True or false: a balloon is needed for the water cycle bowl. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a magnetic chess set (d) a suction hook
39. 39.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
40. 40.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it changes colour (d) it can pop loudly

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