Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 323 · 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 compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a suction hook
2. 2.📘 What do we call light bending as it passes from air into water? (a) refraction (b) reflection (c) magnetism (d) evaporation
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
4. 4.True or false: drops on a cold glass is condensation. (a) False (b) True
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) honey (d) a mirror
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
7. 7.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
8. 8.🧺 Which of these is needed for the density tower? (a) a balloon (b) a battery cell (c) cooking oil (d) yeast
9. 9.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
10. 10.📘 What does “dense” mean? (a) heavy for its size (b) very hot (c) very colourful (d) very thin
11. 11.🌈 In VIBGYOR, what number colour is violet?
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
14. 14.True or false: sugar does not dissolve in water. (a) True (b) False
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a balloon (d) a glass of water
16. 16.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
17. 17.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.True or false: a bicycle pump works by air pressure. (a) False (b) True
19. 19.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) a magnet (d) a mirror
20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) two clear glasses (c) sugar (d) a teaspoon
21. 21.True or false: cooking oil is not needed for the density tower. (a) True (b) False
22. 22.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) prisms (d) clouds
24. 24.🥛 Which of these works by magnetism? (a) a suction hook (b) a compass needle (c) a vacuum cleaner (d) a medicine dropper
25. 25.🥄 Which of these dissolves in water? (a) baking soda (b) chalk powder (c) sawdust (d) sand
26. 26.🔍 Which is the odd one out? (a) a coin (b) a crumpled paper ball (c) a fluff of cotton (d) a glass marble
27. 27.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes less far (c) it goes much farther (d) it turns into a kite
28. 28.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
29. 29.True or false: a toy parachute falls fast through the air. (a) False (b) True
30. 30.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
31. 31.🔍 Which is the odd one out? (a) air (b) very salty water (c) a glass marble (d) a pebble
32. 32.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a towel for spills (c) small test objects (d) a results table
34. 34.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it speeds up (d) it travels less far
35. 35.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
36. 36.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) glue on the card (d) air pushing up
37. 37.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) whether it floats (c) the tub of water (d) the shape of the clay
39. 39.True or false: a medicine dropper works by air pressure. (a) True (b) False
40. 40.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster

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