Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 112 · 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.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
2. 2.🔍 Which is the odd one out? (a) a feather (b) a fluff of cotton (c) a steel spoon (d) a toy parachute
3. 3.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) it rains on them (d) through the air
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 three liquids is what we measure. (a) False (b) True
5. 5.True or false: cooking oil is not needed for the density tower. (a) False (b) True
6. 6.🔍 How can you get the salt back from salty water? (a) add more water (b) let the water evaporate (c) keep it in a fridge (d) stir it more
7. 7.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
8. 8.🔍 Which is the odd one out? (a) a glass marble (b) honey (c) a coin (d) air
9. 9.True or false: warm water is needed for the dissolving test. (a) False (b) True
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sheet of white paper (c) bright sunlight (d) a sunny window
11. 11.💧 Which of these is condensation? (a) drops under a pot lid (b) water becoming ice (c) butter going runny (d) snow turning to water
12. 12.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
13. 13.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it dissolves (d) it sinks
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) keep it away from faces (c) put string round a neck (d) blow it till it bursts
17. 17.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) cling film (c) a battery cell (d) a small cup
18. 18.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) a paper clip (c) yeast (d) a mirror
19. 19.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a battery cell
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a magnet (d) yeast
22. 22.True or false: safety scissors is needed for the paper helicopter. (a) False (b) True
23. 23.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) a mirror (c) sunlight (d) a balloon
24. 24.🔍 Which is the odd one out? (a) a coin (b) a ping-pong ball (c) an ice-cream stick (d) a cork
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
27. 27.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a glass marble (d) a flower stem
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🛟 Which of these floats on water? (a) an iron nail (b) a ping-pong ball (c) a steel spoon (d) a coin
30. 30.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
31. 31.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the tub of water (c) whether it floats (d) the shape of the clay
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
34. 34.📘 What is water vapour? (a) tiny ice cubes (b) salty water (c) a kind of smoke (d) water as a gas
35. 35.True or false: sugar dissolves in water. (a) False (b) True
36. 36.True or false: a steel spoon does not let water climb. (a) True (b) False
37. 37.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
38. 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) sugar (c) a teaspoon (d) cold water
39. 39.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a paper clip (c) a magnet (d) a pencil
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) sugar (c) warm water (d) a clock or timer

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