Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 98 · 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 magnet is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
4. 4.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the person dropping (b) the kind of paper (c) the drop height (d) time to reach the floor
5. 5.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) True (b) False
6. 6.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) water is sticky (d) ice is very cold
7. 7.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) it changes colour (c) hot water is magnetic (d) hot water is heavy
8. 8.💧 Which of these is condensation? (a) a puddle drying up (b) sweat drying on skin (c) dew on morning grass (d) making ice lollies
9. 9.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a towel for spills (d) yeast
10. 10.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it vanished for ever (c) it spread in the water (d) it became air
11. 11.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) True (b) False
18. 18.🚁 Which of these falls slowly through the air? (a) a stone (b) a crumpled paper ball (c) a steel spoon (d) a toy parachute
19. 19.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
20. 20.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a toy parachute (c) a feather (d) a glass marble
21. 21.💧 Which of these is evaporation? (a) drops under a pot lid (b) sweat drying on skin (c) water becoming ice (d) making ice lollies
22. 22.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) a magnet (d) a sunny window
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the kind of clay (c) the shape of the clay
24. 24.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) False (b) True
28. 28.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a magnet (c) safety scissors (d) a strip of paper
29. 29.🔍 Which is the odd one out? (a) an empty capped bottle (b) a ping-pong ball (c) an iron nail (d) a feather
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
31. 31.🧺 Which of these is needed for the density tower? (a) a magnet (b) honey (c) a balloon (d) a mirror
32. 32.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
33. 33.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
34. 34.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
36. 36.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it spins round (c) it flies upward (d) it turns into a ball
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.💧 Which of these does not let water climb? (a) a cotton thread (b) a glass marble (c) a sugar cube (d) a piece of chalk
39. 39.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) air pushes it up (d) juice likes plastic
40. 40.True or false: wet hair drying is melting. (a) True (b) False

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