Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 339 · 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.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
2. 2.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
3. 3.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a steel spoon (c) a paper helicopter (d) a stone
4. 4.True or false: a drinking straw works by magnetism. (a) False (b) True
5. 5.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it goes less far (d) it turns into a kite
6. 6.💧 Which of these is melting? (a) snow turning to water (b) wet clothes drying (c) a puddle drying up (d) a pond icing over
7. 7.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
9. 9.🥄 Which of these does not dissolve in water? (a) baking soda (b) sawdust (c) food colour (d) table salt
10. 10.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
11. 11.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) cold water is wet (d) particles move faster
12. 12.True or false: sweat drying on skin is condensation. (a) True (b) False
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a magnet (d) a towel
14. 14.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) it looks nicer (d) the card gets wet
15. 15.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
16. 16.⚖️ 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 the one thing we change. (a) False (b) True
17. 17.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to ice (c) it turns to salt (d) some water evaporates
18. 18.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) a little shaking (c) more plain water (d) lots of salt stirred in
19. 19.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed
20. 20.True or false: a medicine dropper works by magnetism. (a) True (b) False
21. 21.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a feather (b) a pebble (c) a ping-pong ball (d) an empty capped bottle
24. 24.💧 Which of these is evaporation? (a) drops under a pot lid (b) butter going runny (c) a misty bathroom mirror (d) a puddle drying up
25. 25.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) yeast (c) water (d) cling film
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) False (b) True
27. 27.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a tall clear glass (c) a battery cell (d) honey
28. 28.True or false: honey is needed for the density tower. (a) True (b) False
29. 29.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) a mirror (d) a tub of water
31. 31.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it sinks faster (c) it turns to stone (d) it can float
32. 32.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a paper towel
33. 33.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
34. 34.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a mirror (d) a glass of water
36. 36.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) yeast (c) sticky tape (d) a mirror
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) turmeric powder (d) a few hours of waiting
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a mirror
39. 39.True or false: a coin falls slowly through the air. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of thermocol (c) a dry leaf (d) a cork

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