Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 647 · 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 is needed for the dissolving test? (a) honey (b) cotton wool (c) cold water (d) a comb
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a balloon (c) two clear glasses (d) warm water
3. 3.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a magnet (c) a battery cell (d) a big bowl
7. 7.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) keep it in a fridge (c) stir it more (d) add more water
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.🧺 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 magnet (d) a sheet of white paper
10. 10.True or false: powdered sugar dissolves faster. (a) True (b) False
11. 11.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to hide the corks (d) to win a prize
12. 12.🚀 Which of these goes forward? (a) the swimmer (b) water a swimmer pushes (c) water from the oars (d) air from the balloon
13. 13.🧺 Which of these is needed for the water cycle bowl? (a) ice cubes (b) yeast (c) a magnet (d) a battery cell
14. 14.True or false: a balloon is not needed for the dissolving test. (a) True (b) False
15. 15.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it stops in the air (c) it floats up (d) faster
16. 16.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
17. 17.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
20. 20.🌈 In VIBGYOR, what number colour is indigo?
21. 21.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) throw them away safely (d) give them to a baby
22. 22.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
23. 23.True or false: sugar stirred well dissolves faster. (a) True (b) False
24. 24.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
25. 25.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
26. 26.True or false: a glass marble sinks in water. (a) False (b) True
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
28. 28.True or false: honey is not needed for the density tower. (a) False (b) True
29. 29.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the room it stands in
31. 31.True or false: a crumpled paper ball falls fast through the air. (a) False (b) True
32. 32.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
33. 33.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a sink or a bucket (d) a stiff postcard
35. 35.🚁 Which of these falls slowly through the air? (a) a glass marble (b) a coin (c) a fluff of cotton (d) a stone
36. 36.🧺 Which of these is needed for the density tower? (a) a mirror (b) honey (c) a battery cell (d) a balloon
37. 37.💧 Which change is this: dew on morning grass? (a) freezing (b) evaporation (c) condensation (d) melting
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
39. 39.True or false: butter going runny is freezing. (a) False (b) True
40. 40.True or false: a coin falls slowly through the air. (a) True (b) False

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