Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 73 · 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 amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) water is hiding there (d) air inside pushes back
3. 3.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the same three liquids (c) the order of pouring
5. 5.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) sugar (c) two clear glasses (d) warm water
6. 6.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a magnetic pin holder (d) a drinking straw
8. 8.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) cooking oil (d) a magnet
9. 9.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
10. 10.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.🔍 Which is the odd one out? (a) a pebble (b) air (c) very salty water (d) a coin
14. 14.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) a magnet pulls it (c) the string pulls it (d) escaping air pushes it
15. 15.🛟 Which of these floats on water? (a) an iron nail (b) a feather (c) a pebble (d) a coin
16. 16.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
17. 17.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it travels farther (c) it speeds up (d) it goes backward first
18. 18.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they mix for ever (c) they become solid (d) they separate again
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a tub of water (d) a balloon
20. 20.True or false: a mirror is not needed for the density tower. (a) True (b) False
21. 21.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) False (b) True
23. 23.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) cling film (c) turmeric powder (d) ice cubes
24. 24.True or false: a feather falls fast through the air. (a) True (b) False
25. 25.🧺 Which of these is not needed for the density tower? (a) a spoon (b) a mirror (c) a tall clear glass (d) water with food colour
26. 26.💧 Why do water drops form on the outside of a glass of ice water? (a) vapour in air cools (b) the glass sweats (c) ice escapes the glass (d) the glass leaks
27. 27.True or false: an ice-cream stick floats on water. (a) True (b) False
28. 28.🎈 What is the job of the straw on the string? (a) it blows air in (b) it makes it heavier (c) it guides the balloon (d) it holds water
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a battery cell (c) a balloon (d) a long string
30. 30.True or false: honey is less dense than water. (a) False (b) True
31. 31.True or false: cling film is not needed for the water cycle bowl. (a) True (b) False
32. 32.🌈 In VIBGYOR, what number colour is indigo?
33. 33.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) cooking oil (c) turmeric powder (d) honey
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) yeast (d) bright sunlight
35. 35.🧺 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 sink or a bucket
36. 36.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
37. 37.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a spoon (c) a tall clear glass (d) yeast
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a balloon (c) a magnet (d) a long string
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) turmeric powder (d) a sink or a bucket
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cold water (c) a teaspoon (d) a balloon

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