Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 108 · 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.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a mirror (c) a teaspoon (d) cold water
2. 2.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls slowly (b) falls fast
4. 4.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) False (b) True
5. 5.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to hide the corks (d) to splash everyone
6. 6.True or false: a battery cell is needed for the density tower. (a) True (b) False
7. 7.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) the water increases (c) it turns to ice (d) some water evaporates
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) a battery cell (d) two chairs
9. 9.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) chalk powder (d) sugar
10. 10.🔍 Which layer is on top in the honey-water-oil tower? (a) the spoon (b) honey (c) coloured water (d) cooking oil
11. 11.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) prisms (d) balloons
12. 12.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) safety scissors (c) a battery cell (d) a pencil
13. 13.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the coldest (c) it is yellow (d) it is the stickiest
14. 14.🚁 Which of these falls fast through the air? (a) a stone (b) a feather (c) an open sheet of paper (d) a fluff of cotton
15. 15.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) more plain water (d) a little shaking
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 paper clip (d) a balloon
17. 17.🍯 Which of these is denser than water? (a) an ice cube (b) cooking oil (c) a ping-pong ball (d) a glass marble
18. 18.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
19. 19.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) put string round a neck (d) blow it till it bursts
20. 20.🔍 Which is the odd one out? (a) honey (b) a glass marble (c) a pebble (d) a cork
21. 21.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) cotton wool (c) cold water (d) warm water
22. 22.🔍 Which is the odd one out? (a) a glass marble (b) very salty water (c) an ice cube (d) a pebble
23. 23.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) how much of each liquid (b) the order of the layers (c) the same glass (d) the order of pouring
24. 24.True or false: table salt does not dissolve in water. (a) False (b) True
25. 25.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) the sugar turns to salt (c) some stays undissolved (d) all of it dissolves
26. 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) yeast (c) two chairs (d) sticky tape
27. 27.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) True (b) False
28. 28.True or false: the rocket goes forward. (a) False (b) True
29. 29.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) yeast (d) a sink or a bucket
31. 31.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a battery cell (d) a sink or a bucket
33. 33.💧 Which change is this: a puddle drying up? (a) melting (b) freezing (c) evaporation (d) condensation
34. 34.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) bright sunlight (d) a magnet
35. 35.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
36. 36.🧺 Do we need a mirror for the water cycle bowl? (a) not needed (b) needed
37. 37.⚖️ 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 keep it the same (c) we change it
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) True (b) False
39. 39.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) throw the glass (d) do not lick the spoon
40. 40.True or false: a pond icing over is evaporation. (a) False (b) True

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