Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 590 · 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.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a pencil (c) turmeric powder (d) a paper clip
2. 2.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a vacuum cleaner (d) a compass needle
3. 3.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the amount of water
4. 4.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it turns into a kite (d) it changes colour
5. 5.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) turmeric powder
7. 7.True or false: cooking oil does not dissolve in water. (a) False (b) True
8. 8.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) True (b) False
10. 10.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) spilled oil is slippery (d) oil makes it rain
11. 11.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
12. 12.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
13. 13.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the honey layer (c) in the water layer (d) on top of the oil
14. 14.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
15. 15.True or false: turmeric powder is needed for the paper helicopter. (a) False (b) True
16. 16.True or false: gas from the rocket goes backward. (a) True (b) False
17. 17.True or false: powdered sugar dissolves slower. (a) False (b) True
18. 18.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
19. 19.⚖️ 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 measure it (b) we change it (c) we keep it the same
20. 20.True or false: a pebble is denser than water. (a) False (b) True
21. 21.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a small rainbow (d) a magnet
22. 22.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a rubber eraser (d) a piece of chalk
23. 23.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) sugar in warm water
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a balloon
25. 25.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
26. 26.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) glue on the card (d) air pushing up
27. 27.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) pour more water (c) leave them wet (d) slide on them
28. 28.🧺 Do we need a magnet for the water cycle bowl? (a) not needed (b) needed
29. 29.⚖️ 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 measure it (c) we keep it the same
30. 30.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) ice cubes (c) sunlight (d) cling film
31. 31.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.💧 Which change is this: dew on morning grass? (a) freezing (b) melting (c) condensation (d) evaporation
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) an ice cube (b) a cork (c) honey (d) a ping-pong ball
36. 36.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the sugar turns to salt (c) the water turns solid (d) all of it dissolves
37. 37.💧 Which of these is condensation? (a) a puddle drying up (b) dew on morning grass (c) butter going runny (d) making ice lollies
38. 38.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) it stays still (c) forward (d) backward
39. 39.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) distance it travels (c) the same straw (d) how big we blow it

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