Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 103 · 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 card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a sink or a bucket (d) a towel
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
4. 4.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a paper clip (c) a balloon (d) a pencil
5. 5.🔍 Which is the odd one out? (a) ice becoming water (b) butter going runny (c) snow turning to water (d) wet clothes drying
6. 6.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
7. 7.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) the card gets wet (d) little air left inside
8. 8.True or false: a paper clip is needed for the paper helicopter. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a magnetic chess set (d) a drinking straw
10. 10.True or false: turmeric powder is needed for the density tower. (a) True (b) False
11. 11.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
12. 12.🔍 Which is the odd one out? (a) honey (b) very salty water (c) cooking oil (d) a coin
13. 13.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it changes colour (c) it turns into a kite (d) it gets too heavy
14. 14.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a sink or a bucket (d) a glass of water
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a white flower (d) food colour
17. 17.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is magnetic (d) it is heavier
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) False (b) True
20. 20.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) stare at the Sun (d) look at it in a mirror
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
22. 22.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) water splits the light (d) the water is coloured
23. 23.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a plastic ruler (d) a glass marble
24. 24.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
25. 25.⚖️ 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
26. 26.🔍 Which is the odd one out? (a) a glass marble (b) a stone (c) a coin (d) a toy parachute
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a white flower (d) a magnet
28. 28.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
29. 29.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) juice likes plastic (d) the straw is magnetic
32. 32.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
33. 33.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
34. 34.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
35. 35.True or false: sugar in icy water dissolves faster. (a) False (b) True
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the kind of clay
37. 37.🧺 Do we need honey for the density tower? (a) not needed (b) needed
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
39. 39.⚖️ 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 keep it the same (c) we change it
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) yeast (d) a magnet

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