Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 756 · 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 misty bathroom mirror (b) sweat drying on skin (c) a puddle drying up (d) wet hair drying
2. 2.🧺 Which of these is needed for the density tower? (a) a magnet (b) turmeric powder (c) a spoon (d) yeast
3. 3.🛟 Does a cork float or sink in water? (a) sinks (b) floats
4. 4.🍯 Which of these is denser than water? (a) a glass marble (b) air (c) a ping-pong ball (d) a cork
5. 5.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a coin (c) a toy parachute (d) a steel spoon
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
9. 9.🔍 Which is the odd one out? (a) a ping-pong ball (b) a piece of thermocol (c) a glass marble (d) a cork
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.True or false: a pebble is denser than water. (a) True (b) False
12. 12.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) sugar likes the dark (c) cold water is wet (d) particles move faster
13. 13.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
14. 14.True or false: a pencil is needed for the paper helicopter. (a) False (b) True
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the shape of the clay (c) the kind of clay (d) the tub of water
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
18. 18.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) a big bowl (c) yeast (d) ice cubes
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a sunny window (d) a clear glass of water
20. 20.True or false: a puddle drying up is melting. (a) True (b) False
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is what we measure. (a) True (b) False
24. 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a tall clear glass (c) a spoon (d) a magnet
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a battery cell (c) a balloon (d) a results table
27. 27.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
28. 28.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a drinking straw (d) a magnetic chess set
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) the sugar cube (d) both the same
33. 33.🔍 Which is the odd one out? (a) a toy parachute (b) a steel spoon (c) a feather (d) a fluff of cotton
34. 34.☀️ What is white sunlight really made of? (a) tiny drops of water (b) many colours mixed (c) tiny bits of dust (d) only yellow light
35. 35.🔍 Which is the odd one out? (a) table salt (b) sugar (c) sand (d) baking soda
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
37. 37.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it does not fall (d) so it turns blue
38. 38.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a balloon (d) a battery cell
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same glass (b) brightness of rainbow (c) the amount of water (d) the same window

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