Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 555 · 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.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
2. 2.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
3. 3.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) in the water layer (c) in the honey layer (d) under the honey
5. 5.True or false: an open sheet of paper falls fast through the air. (a) False (b) True
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a mirror (c) a results table (d) small test objects
8. 8.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a steel spoon (d) a sugar cube
9. 9.💧 Why do water drops form on the outside of a glass of ice water? (a) ice escapes the glass (b) the glass leaks (c) the glass sweats (d) vapour in air cools
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) False (b) True
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) turmeric powder (c) a towel (d) a stiff postcard
12. 12.True or false: cooking oil is less dense than water. (a) False (b) True
13. 13.🧺 Do we need honey for the density tower? (a) not needed (b) needed
14. 14.🧺 Which of these is not needed for the density tower? (a) a balloon (b) a tall clear glass (c) water with food colour (d) a spoon
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) yeast (c) water (d) cling film
16. 16.True or false: a magnet is not needed for the density tower. (a) True (b) False
17. 17.True or false: a mirror is needed for the water cycle bowl. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a piece of thermocol (b) an empty capped bottle (c) a ping-pong ball (d) a glass marble
19. 19.🔍 Which is the odd one out? (a) air (b) a cork (c) an ice cube (d) honey
20. 20.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they separate again (c) they become solid (d) they turn to honey
21. 21.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
22. 22.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
24. 24.True or false: water with food colour is needed for the density tower. (a) True (b) False
25. 25.⚖️ 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 the layers is what we measure. (a) False (b) True
26. 26.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an ice cube (c) a coin (d) a cork
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sunny window (c) turmeric powder (d) a battery cell
30. 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a balloon (c) a long string (d) sticky tape
31. 31.True or false: a battery cell is needed for the paper helicopter. (a) False (b) True
32. 32.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it sinks (d) it turns blue
33. 33.🔍 Which is the odd one out? (a) an empty capped bottle (b) a coin (c) an ice-cream stick (d) a cork
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the room it stands in (b) time for colour to show (c) the amount of colour (d) the kind of flower
35. 35.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
36. 36.True or false: water with food colour is not needed for the density tower. (a) False (b) True
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
38. 38.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) sweat drying on skin (b) wet clothes drying (c) drops under a pot lid (d) a puddle drying up
40. 40.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) sugar (d) sawdust

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