Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 741 · 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 works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a magnetic chess set (d) a bicycle pump
2. 2.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
3. 3.True or false: a piece of chalk lets water climb up it. (a) True (b) False
4. 4.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a sundial (d) a balloon rocket
5. 5.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
6. 6.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
7. 7.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it can pop loudly (d) it changes colour
8. 8.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a paper towel (d) a rubber eraser
9. 9.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) turmeric powder (b) water (c) sunlight (d) a big bowl
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the person dropping (b) the length of the blades (c) the drop height (d) the paper clip
11. 11.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
12. 12.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) sharp kitchen shears (c) a paper cutter (d) gardening shears
13. 13.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) yeast (c) honey (d) a mirror
14. 14.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) yeast (c) a spoon (d) water with food colour
15. 15.💧 Which change is this: ice becoming water? (a) evaporation (b) melting (c) freezing (d) condensation
16. 16.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) a big sugar cube (d) powdered sugar
17. 17.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
18. 18.🚁 Why does the paper helicopter fall slowly? (a) it has no weight (b) air pushes on its blades (c) a magnet holds it (d) the floor pushes it
19. 19.🍯 Which of these is denser than water? (a) a coin (b) a cork (c) cooking oil (d) an ice cube
20. 20.💧 Which change is this: making ice lollies? (a) condensation (b) freezing (c) melting (d) evaporation
21. 21.True or false: wet clothes drying is melting. (a) False (b) True
22. 22.🛟 Which of these floats on water? (a) an iron nail (b) a feather (c) a pebble (d) a glass marble
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) a drinking straw (d) yeast
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) whether the card stays (c) the way we turn it (d) how full the glass is
25. 25.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
26. 26.🔍 Which is the odd one out? (a) a glass marble (b) an open sheet of paper (c) a toy parachute (d) a paper helicopter
27. 27.True or false: very salty water is less dense than water. (a) False (b) True
28. 28.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a battery cell (c) a paper clip (d) a strip of paper
29. 29.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) yeast (d) turmeric powder
30. 30.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the water layer (c) on top of the oil (d) in the honey layer
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) True (b) False
32. 32.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.🛟 Which of these sinks in water? (a) a cork (b) an ice cube (c) a pebble (d) a ping-pong ball
35. 35.True or false: butter going runny is freezing. (a) True (b) False
36. 36.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it sinks (c) it turns white (d) it dissolves
37. 37.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
38. 38.True or false: yeast is needed for the balloon rocket. (a) False (b) True
39. 39.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a balloon (c) a mirror (d) a battery cell
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a mirror (c) a results table (d) a towel for spills

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