Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 789 · 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.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the water turns red (c) the bowl freezes (d) more drops form
2. 2.True or false: turmeric powder is needed for the density tower. (a) True (b) False
3. 3.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they fall off at once (d) they all turn green
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) True (b) False
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is the one thing we change. (a) True (b) False
6. 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a mirror (c) two chairs (d) a balloon
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
9. 9.True or false: a dry leaf sinks in water. (a) True (b) False
10. 10.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) turmeric powder (c) a magnet (d) a sheet of white paper
11. 11.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a pencil (c) a ruler (d) a paper clip
12. 12.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
13. 13.🍯 Which of these is less dense than water? (a) a pebble (b) a ping-pong ball (c) very salty water (d) honey
14. 14.🔍 Which is the odd one out? (a) a stone (b) a coin (c) a toy parachute (d) a glass marble
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) a glass of water (d) a white flower
16. 16.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
17. 17.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
18. 18.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a battery cell (c) a strip of paper (d) a pencil
19. 19.True or false: glucose powder dissolves in water. (a) False (b) True
20. 20.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a pet (d) a toddler
21. 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) sticky tape (c) vinegar (d) a long string
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) turmeric powder (c) small test objects (d) a results table
25. 25.🌈 In VIBGYOR, what number colour is yellow?
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels less far (d) it travels farther
28. 28.True or false: a puddle drying up is evaporation. (a) True (b) False
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.True or false: baking soda dissolves in water. (a) True (b) False
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) yeast (d) turmeric powder
32. 32.True or false: a long string is needed for the balloon rocket. (a) True (b) False
33. 33.📘 What is the push of air on a falling thing called? (a) magnetism (b) floating (c) dissolving (d) air resistance
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 size of the bowl”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
36. 36.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar stirred well (c) sugar in icy water (d) a big sugar cube
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) time to dissolve (c) the water temperature (d) the amount of water
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a battery cell
39. 39.🧺 Do we need a balloon for the water cycle bowl? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a tub of water (c) a results table (d) small test objects

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