Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 354 · 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.True or false: a feather falls slowly through the air. (a) True (b) False
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) the amount of sugar (c) the amount of water (d) time to dissolve
3. 3.True or false: a small cup is needed for the water cycle bowl. (a) False (b) True
4. 4.⚖️ 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 the layers (b) the order of pouring (c) the same glass
5. 5.🔍 How can you get the salt back from salty water? (a) stir it more (b) let the water evaporate (c) add more water (d) keep it in a fridge
6. 6.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
7. 7.💧 Which change is this: sweat drying on skin? (a) evaporation (b) condensation (c) melting (d) freezing
8. 8.True or false: a suction hook works by air pressure. (a) True (b) False
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) yeast (c) a spoon (d) water with food colour
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a white flower (d) food colour
13. 13.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
14. 14.⚖️ 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 amount of water (b) the same glass (c) the same window (d) brightness of rainbow
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.📘 What do we call water with sugar dissolved in it? (a) a magnet (b) a crystal (c) a solution (d) a rainbow
17. 17.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a long string (c) yeast (d) a mirror
18. 18.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the density tower? (a) a spoon (b) turmeric powder (c) a battery cell (d) a balloon
20. 20.True or false: drops on a cold glass is freezing. (a) True (b) False
21. 21.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
22. 22.💧 Which of these lets water climb up it? (a) a glass marble (b) a flower stem (c) a steel spoon (d) a rubber eraser
23. 23.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
24. 24.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) turmeric powder
27. 27.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) a paper cutter (d) safety scissors
28. 28.🚀 Which of these goes forward? (a) the balloon (b) water from the oars (c) air from the balloon (d) water a swimmer pushes
29. 29.🔍 Which is the odd one out? (a) sawdust (b) glucose powder (c) sugar (d) table salt
30. 30.True or false: a long string is needed for the balloon rocket. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a coin (b) very salty water (c) cooking oil (d) honey
32. 32.True or false: honey is less dense than water. (a) False (b) True
33. 33.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) turmeric powder (d) a results table
34. 34.True or false: sugar in icy water dissolves slower. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a coin (b) a pebble (c) a glass marble (d) a ping-pong ball
36. 36.🥄 Which of these dissolves in water? (a) sawdust (b) baking soda (c) chalk powder (d) small pebbles
37. 37.🔍 Which is the odd one out? (a) a feather (b) an open sheet of paper (c) a paper helicopter (d) a coin
38. 38.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) ice cubes (c) a mirror (d) a small cup
39. 39.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the room it stands in (c) time for colour to show

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