Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 881 · 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 goes forward? (a) the rocket (b) gas from the rocket (c) water from the oars (d) water a swimmer pushes
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
3. 3.⚖️ 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
4. 4.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) a spoon (c) cooking oil (d) a battery cell
5. 5.🌈 In VIBGYOR, what number colour is violet?
6. 6.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) give them to a baby (d) throw them away safely
7. 7.True or false: a toy parachute falls slowly through the air. (a) False (b) True
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the water temperature (c) the kind of sugar (d) the stirring
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a drinking straw (d) vinegar
10. 10.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
11. 11.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same glass (b) whether the card stays (c) how full the glass is
13. 13.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) ice is very cold (d) water is sticky
14. 14.🍯 Which of these is denser than water? (a) cooking oil (b) very salty water (c) an ice cube (d) a ping-pong ball
15. 15.True or false: ice cubes is not needed for the water cycle bowl. (a) False (b) True
16. 16.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
17. 17.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) water with food colour (c) a battery cell (d) honey
18. 18.🔍 Which is the odd one out? (a) a stone (b) a feather (c) an open sheet of paper (d) a fluff of cotton
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 change it (b) we measure it (c) we keep it the same
20. 20.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
24. 24.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) under the honey (d) on top of the oil
25. 25.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.⚖️ 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 keep it the same (c) we change it
28. 28.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) a little shaking (d) lots of salt stirred in
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the stirring (b) the water temperature (c) time to dissolve
30. 30.💧 What happens to water vapour when it touches the cold cling film? (a) it disappears (b) it turns to drops (c) it turns to salt (d) it turns to smoke
31. 31.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) True (b) False
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.True or false: a suction hook works by magnetism. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) cooking oil (b) air (c) a coin (d) a cork
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) False (b) True
38. 38.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) a mirror (c) a battery cell (d) a ruler
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) food colour (d) a glass of water
40. 40.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve

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