Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 564 · 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 card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a magnet (d) a balloon
2. 2.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) the crumpled ball (c) the flat sheet (d) a sheet of glass
3. 3.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a magnet (d) a clear glass of water
5. 5.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to keep children safe (d) to splash everyone
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
8. 8.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
9. 9.🍯 Which of these is denser than water? (a) cooking oil (b) a cork (c) a coin (d) a ping-pong ball
10. 10.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) its hollow shape (d) sea water is warm
11. 11.⚖️ 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
12. 12.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
13. 13.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
14. 14.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
15. 15.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) cold water is wet (d) particles move faster
16. 16.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
17. 17.⚖️ 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 order of pouring”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is less dense (c) water is sticky (d) ice is magnetic
19. 19.True or false: a glass marble floats on water. (a) True (b) False
20. 20.🌈 How many colours do we name in a rainbow (VIBGYOR)?
21. 21.🔍 Which is the odd one out? (a) a pebble (b) very salty water (c) a coin (d) cooking oil
22. 22.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
23. 23.💧 Which of these is evaporation? (a) water becoming ice (b) a misty bathroom mirror (c) a puddle drying up (d) dew on morning grass
24. 24.True or false: an empty capped bottle sinks in water. (a) True (b) False
25. 25.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a towel (d) a stiff postcard
28. 28.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
29. 29.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) the small pebble (c) both of them (d) neither of them
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it dissolves (c) it turns blue (d) it settles at the bottom
32. 32.🚁 Which of these falls slowly through the air? (a) a paper helicopter (b) a coin (c) a glass marble (d) a stone
33. 33.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a steel spoon (d) a paper towel
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) yeast
35. 35.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
36. 36.True or false: a fluff of cotton falls slowly through the air. (a) True (b) False
37. 37.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a medicine dropper (d) a fridge magnet
38. 38.True or false: air from the balloon goes forward. (a) True (b) False
39. 39.⚖️ 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 kept the same. (a) False (b) True
40. 40.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True

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