Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 394 · 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 add two more paper clips. How does it fall? (a) slower (b) it stops in the air (c) faster (d) it floats up
2. 2.True or false: cling film is not needed for the water cycle bowl. (a) True (b) False
3. 3.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) yeast
5. 5.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
6. 6.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
7. 7.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.🔍 Which is the odd one out? (a) a dry leaf (b) a ping-pong ball (c) a steel spoon (d) a cork
9. 9.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they mix for ever (d) they separate again
10. 10.🚁 Dropped from a raised hand, does a fluff of cotton fall slowly or fast? (a) falls fast (b) falls slowly
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) a tub of water (d) a magnet
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) sugar in icy water
14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) a clock or timer (c) cold water (d) two clear glasses
15. 15.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) a magnet (d) glue on the card
16. 16.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) a clock or timer (c) sugar (d) two clear glasses
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) True (b) False
18. 18.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) taste it (d) poke it with a finger
19. 19.🛟 Which of these sinks in water? (a) a feather (b) an ice cube (c) a metal key (d) a dry leaf
20. 20.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is the one thing we change. (a) False (b) True
21. 21.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
22. 22.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) water a swimmer pushes (d) the swimmer
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a stiff postcard (d) a glass of water
24. 24.True or false: gas from the rocket goes forward. (a) True (b) False
25. 25.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it speeds up (d) it travels farther
26. 26.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) False (b) True
28. 28.🍯 Which of these is denser than water? (a) cooking oil (b) a ping-pong ball (c) an ice cube (d) a pebble
29. 29.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) in the water layer (c) at the very bottom (d) on top of the oil
30. 30.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
31. 31.🔮 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
32. 32.⚖️ 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 order of pouring”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🥄 Which of these dissolves slower? (a) sugar left unstirred (b) powdered sugar (c) sugar in warm water (d) sugar stirred well
34. 34.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is what we measure. (a) True (b) False
36. 36.True or false: a mirror is needed for the density tower. (a) False (b) True
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
38. 38.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) True (b) False
39. 39.💧 Which change is this: a puddle drying up? (a) melting (b) evaporation (c) condensation (d) freezing
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) the same straw (c) distance it travels (d) the same tape

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