Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 421 · 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.True or false: cold water is needed for the dissolving test. (a) False (b) True
2. 2.🧺 Which of these is needed for the density tower? (a) a magnet (b) a spoon (c) a balloon (d) yeast
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) True (b) False
4. 4.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels farther (c) it travels less far (d) it goes backward first
6. 6.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
7. 7.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
8. 8.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
9. 9.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it can float (d) it dissolves
10. 10.True or false: a feather sinks in water. (a) True (b) False
11. 11.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a pet (d) a toddler
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) turmeric powder (d) a stiff postcard
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) True (b) False
15. 15.⚖️ 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) True (b) False
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a magnet
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a white flower (d) a glass of water
18. 18.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
19. 19.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a paper clip (c) turmeric powder (d) a magnet
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a mirror (d) yeast
22. 22.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it floats higher (d) it sinks
23. 23.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
24. 24.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) the cold water (d) air pushing up
25. 25.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) sugar (c) a balloon (d) a clock or timer
26. 26.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) turmeric powder (c) ice cubes (d) a balloon
27. 27.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) a magnet (d) a paper clip
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a long string (d) a magnet
29. 29.📘 What does “dense” mean? (a) very hot (b) heavy for its size (c) very colourful (d) very thin
30. 30.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
31. 31.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) the same (c) faster (d) slower
32. 32.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
33. 33.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
34. 34.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
35. 35.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) water splits the light (d) the water is coloured
36. 36.🧺 Which of these is needed for the density tower? (a) a magnet (b) a mirror (c) cooking oil (d) a battery cell
37. 37.🔍 Which is the odd one out? (a) drops under a pot lid (b) butter going runny (c) snow turning to water (d) ice becoming water
38. 38.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
39. 39.True or false: a magnetic chess set works by magnetism. (a) True (b) False
40. 40.🍯 Which of these is less dense than water? (a) a glass marble (b) very salty water (c) honey (d) air

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