Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 7 · 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 is the odd one out? (a) a cork (b) a ping-pong ball (c) cooking oil (d) a glass marble
2. 2.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a fridge magnet (c) a mirror (d) a balloon rocket
5. 5.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a comb (c) a magnet (d) warm water
6. 6.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) baking soda (d) sawdust
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a cotton thread (d) a piece of chalk
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a magnet (c) a tub of water (d) a results table
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the way we turn it (b) whether the card stays (c) the same glass (d) how full the glass is
11. 11.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a paper clip (c) a magnet (d) a pencil
12. 12.True or false: a rubber eraser does not let water climb. (a) True (b) False
13. 13.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it travels less far (d) it speeds up
15. 15.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a balloon (d) bright sunlight
16. 16.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a battery cell (d) a paper clip
17. 17.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
18. 18.True or false: warm water is not needed for the dissolving test. (a) False (b) True
19. 19.True or false: a suction hook works by magnetism. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a magnetic pin holder (d) a suction hook
21. 21.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
22. 22.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) sunlight (c) a small cup (d) a magnet
23. 23.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
24. 24.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a paper clip (c) a balloon (d) a pencil
25. 25.True or false: a stone falls slowly through the air. (a) True (b) False
26. 26.🛟 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
27. 27.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
28. 28.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a ruler (c) a battery cell (d) a strip of paper
30. 30.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a mirror (c) a long string (d) a magnet
31. 31.True or false: drops under a pot lid is condensation. (a) False (b) True
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) False (b) True
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
34. 34.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
35. 35.🧺 Which of these is not needed for the dissolving test? (a) a balloon (b) a teaspoon (c) sugar (d) two clear glasses
36. 36.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a sink or a bucket (c) a stiff postcard (d) a towel
38. 38.🔍 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
39. 39.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a balloon (d) food colour

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