Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 305 · 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.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) an empty capped bottle (b) a piece of thermocol (c) a metal key (d) a dry leaf
3. 3.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a cork (c) an ice-cream stick (d) a metal key
4. 4.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a clock or timer (c) a comb (d) honey
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) the amount of colour (c) the length of the stem (d) the kind of flower
6. 6.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.⚖️ 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 time of day (b) the same glass (c) the same window (d) brightness of rainbow
9. 9.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
10. 10.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a sunny window (d) turmeric powder
12. 12.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
13. 13.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a magnet (c) a glass of water (d) a stiff postcard
15. 15.True or false: a glass marble floats on water. (a) False (b) True
16. 16.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
19. 19.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it turns blue (d) so it gets hot
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) True (b) False
21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) False (b) True
22. 22.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) the balloon (d) water a swimmer pushes
23. 23.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls fast (b) falls slowly
24. 24.💧 Which change is this: butter going runny? (a) freezing (b) melting (c) evaporation (d) condensation
25. 25.True or false: cooking oil is needed for the density tower. (a) True (b) False
26. 26.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a sink or a bucket (d) a stiff postcard
28. 28.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls slowly (b) falls fast
29. 29.⚖️ 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 change it (c) we keep it the same
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a mirror
31. 31.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
32. 32.True or false: a sugar cube does not let water climb. (a) False (b) True
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the same string (c) distance it travels (d) how big we blow it
34. 34.💧 Which of these is evaporation? (a) ice becoming water (b) water becoming ice (c) wet clothes drying (d) butter going runny
35. 35.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) escaping air pushes it (d) a magnet pulls it
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the amount of water (c) the stirring (d) the water temperature
38. 38.True or false: a feather sinks in water. (a) True (b) False
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) False (b) True
40. 40.⚖️ 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 kept the same. (a) True (b) False

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