Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 330 · 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.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) under the honey (d) on top of the oil
2. 2.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
3. 3.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a rubber eraser (d) a piece of foil
4. 4.🔍 Which is the odd one out? (a) a cork (b) a ping-pong ball (c) an ice cube (d) honey
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a cork (c) very salty water (d) honey
6. 6.True or false: a magnet is needed for the water cycle bowl. (a) False (b) True
7. 7.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
8. 8.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) a paper clip (c) a strip of paper (d) safety scissors
9. 9.True or false: air from the balloon goes backward. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) table salt (d) sand
11. 11.🧺 Which of these is needed for the water cycle bowl? (a) sunlight (b) a magnet (c) turmeric powder (d) a balloon
12. 12.True or false: a magnet is not needed for the paper helicopter. (a) False (b) True
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the order of the layers (c) how much of each liquid
14. 14.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) they never dry (c) slower (d) faster
16. 16.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls slowly (b) falls fast
17. 17.🔍 Which is the odd one out? (a) a feather (b) a paper helicopter (c) a steel spoon (d) a toy parachute
18. 18.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) evaporation (d) reflection
19. 19.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a battery cell (c) a tub of water (d) a towel for spills
21. 21.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) do not lick the spoon (d) pour it on the floor
22. 22.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) water with food colour (c) a spoon (d) honey
25. 25.🍯 Which of these is denser than water? (a) an ice cube (b) very salty water (c) cooking oil (d) a cork
26. 26.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) gardening shears (c) safety scissors (d) a paper cutter
27. 27.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
28. 28.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cotton wool (c) a magnet (d) warm water
29. 29.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they become solid (c) they turn to honey (d) they separate again
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the time of day (b) the same window (c) the same glass (d) brightness of rainbow
31. 31.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it turns blue (d) it sinks
32. 32.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a pencil (c) a magnet (d) a strip of paper
33. 33.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the big log (c) neither of them (d) the small pebble
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a towel for spills (d) a mirror
35. 35.🚀 Which of these goes backward? (a) air from the balloon (b) the swimmer (c) the rocket (d) the balloon
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.True or false: a mirror is needed for the water rainbow. (a) True (b) False
38. 38.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
39. 39.🍯 Which of these is denser than water? (a) a cork (b) an ice cube (c) cooking oil (d) a pebble
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it

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