Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 111 · 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.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
2. 2.True or false: a bicycle pump works by magnetism. (a) True (b) False
3. 3.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a compass needle (c) a vacuum cleaner (d) a drinking straw
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
5. 5.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is very cold (c) ice is magnetic (d) water is sticky
6. 6.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
7. 7.True or false: a compass needle works by magnetism. (a) False (b) True
8. 8.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it turns into a kite (d) it goes less far
9. 9.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
10. 10.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) water (c) a big bowl (d) yeast
11. 11.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) sunlight (c) yeast (d) a big bowl
12. 12.True or false: a magnet is not needed for the density tower. (a) False (b) True
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🛟 Which of these sinks in water? (a) a cork (b) a feather (c) a ping-pong ball (d) a pebble
15. 15.🛟 Which of these floats on water? (a) a steel spoon (b) a piece of thermocol (c) a glass marble (d) a ball of clay
16. 16.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
17. 17.💧 Which of these is evaporation? (a) drops under a pot lid (b) a puddle drying up (c) a pond icing over (d) dew on morning grass
18. 18.True or false: a battery cell is needed for the density tower. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a cork (b) a ping-pong ball (c) a glass marble (d) an ice cube
20. 20.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) under the honey (c) in the water layer (d) on top of the oil
21. 21.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) sawdust (d) cooking oil
22. 22.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
23. 23.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
24. 24.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
25. 25.🚁 Why does the paper helicopter fall slowly? (a) the floor pushes it (b) air pushes on its blades (c) it has no weight (d) a magnet holds it
26. 26.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) pour it on the floor (d) taste each layer
27. 27.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the cling film cover (b) sun or shade (c) the amount of water (d) the size of the bowl
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the same straw (c) how big we blow it (d) the same string
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) warm water (c) a clock or timer (d) sugar
32. 32.🧺 Which of these is needed for the dissolving test? (a) honey (b) a magnet (c) cold water (d) a comb
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) False (b) True
34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
35. 35.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a magnetic pin holder
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a balloon (c) a tub of water (d) a results table
37. 37.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a pencil (c) a paper clip (d) a ruler
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a tub of water (d) a results table

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