Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 470 · 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: an empty capped bottle floats on water. (a) False (b) True
2. 2.True or false: sugar in warm water dissolves faster. (a) False (b) True
3. 3.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
4. 4.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
5. 5.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they mix for ever (c) they become solid (d) they turn to honey
6. 6.🥛 Which of these works by air pressure? (a) a compass needle (b) a bicycle pump (c) a fridge magnet (d) a magnetic pin holder
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) a mirror (c) sunlight (d) a big bowl
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
10. 10.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
11. 11.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a big bowl (c) a battery cell (d) water
12. 12.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the card flies away (c) the glass breaks (d) the water turns to ice
14. 14.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
15. 15.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) at the very bottom (c) on top of the oil (d) in the water layer
16. 16.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
17. 17.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
20. 20.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) friction (d) sunlight
22. 22.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a mirror (c) honey (d) water with food colour
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) water with food colour (d) a magnet
24. 24.🌈 How many colours do we name in a rainbow (VIBGYOR)?
25. 25.💧 Which change is this: a misty bathroom mirror? (a) melting (b) evaporation (c) condensation (d) freezing
26. 26.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
27. 27.🍯 Which of these is denser than water? (a) a ping-pong ball (b) an ice cube (c) a coin (d) cooking oil
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) False (b) True
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) a balloon
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) cold water (c) warm water (d) a mirror
33. 33.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) they never dry (c) slower (d) faster
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.🛟 Which of these floats on water? (a) a glass marble (b) a coin (c) a pebble (d) a dry leaf
36. 36.True or false: a spoon is not needed for the density tower. (a) False (b) True
37. 37.True or false: air from the balloon goes forward. (a) True (b) False
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of sugar (c) the amount of water (d) time to dissolve
39. 39.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a drinking straw (d) a compass needle
40. 40.🛟 Which of these floats on water? (a) a steel spoon (b) a pebble (c) a coin (d) a feather

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