Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 600 · 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.⚖️ 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) brightness of rainbow (b) the same glass (c) the amount of water (d) the same white paper
2. 2.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a strip of paper (c) a mirror (d) a ruler
3. 3.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) vinegar (d) a balloon
4. 4.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
5. 5.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) glucose powder (d) cooking oil
6. 6.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a magnet (d) a solution
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) False (b) True
8. 8.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a magnetic pin holder
9. 9.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) a balloon (d) yeast
11. 11.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the water turns solid (c) the sugar turns to salt (d) all of it dissolves
12. 12.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) pour it on the floor (d) do not lick the spoon
13. 13.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they all turn green (d) they turn two colours
14. 14.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
15. 15.True or false: a pencil is needed for the paper helicopter. (a) False (b) True
16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of pouring (b) the same three liquids (c) how much of each liquid (d) the order of the layers
17. 17.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
18. 18.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) sawdust (d) sand
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a magnet
20. 20.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the water layer (c) in the honey layer (d) on top of the oil
21. 21.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
23. 23.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a glass marble (c) a feather (d) a piece of thermocol
24. 24.🔍 Which is the odd one out? (a) food colour (b) sugar (c) table salt (d) cooking oil
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
26. 26.⚖️ 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 measure it (c) we change it
27. 27.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is the densest (c) it is the coldest (d) it is yellow
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a mirror (c) a magnet (d) a long string
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a glass of water (d) a white flower
31. 31.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) whether the card stays (b) how full the glass is (c) the same glass (d) the same card
33. 33.⚖️ 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 same glass (b) the amount of water (c) the time of day (d) brightness of rainbow
34. 34.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) sunlight (c) a mirror (d) a big bowl
35. 35.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it still floats (d) it sinks
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the amount of water (c) the amount of sugar (d) the water temperature
37. 37.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) vinegar (c) a balloon (d) sticky tape
39. 39.True or false: powdered sugar dissolves slower. (a) False (b) True
40. 40.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water

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