Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 562 · 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 glass of water is needed for the coloured flower experiment. (a) False (b) True
2. 2.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same glass (b) brightness of rainbow (c) the same window (d) the time of day
4. 4.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
5. 5.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) yeast (c) two chairs (d) a battery cell
6. 6.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the person dropping (c) the length of the blades
8. 8.🔍 Which is the odd one out? (a) a coin (b) a ping-pong ball (c) an iron nail (d) a glass marble
9. 9.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
10. 10.True or false: a spoon is not needed for the density tower. (a) False (b) True
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ 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 the one thing we change. (a) False (b) True
13. 13.True or false: a cork sinks in water. (a) True (b) False
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
16. 16.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
17. 17.True or false: a spoon is needed for the density tower. (a) True (b) False
18. 18.🥄 Which of these does not dissolve in water? (a) chalk powder (b) food colour (c) baking soda (d) table salt
19. 19.💧 Which of these lets water climb up it? (a) a steel spoon (b) a sugar cube (c) a plastic ruler (d) a rubber eraser
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they mix for ever (c) they become solid (d) they separate again
22. 22.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
24. 24.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it became air (c) it spread in the water (d) it sank as sand
25. 25.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) taste it (d) look for leftover grains
26. 26.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.True or false: a steel spoon lets water climb up it. (a) True (b) False
28. 28.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) yeast (c) sticky tape (d) two chairs
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same glass (b) the amount of water (c) brightness of rainbow
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) food colour (d) a balloon
32. 32.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🥄 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) cooking oil (d) glucose powder
34. 34.🔍 Which is the odd one out? (a) cooking oil (b) an ice cube (c) a ping-pong ball (d) very salty water
35. 35.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels less far (d) it travels farther
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the tub of water (c) the kind of clay (d) the shape of the clay
37. 37.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a battery cell (d) a stiff postcard
39. 39.True or false: a mirror is not needed for the water cycle bowl. (a) False (b) True
40. 40.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed

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