Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 811 · 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.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to weigh down the bottom (b) to make it fall slower (c) to make it magnetic (d) to stop the spinning
2. 2.🥄 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) sawdust (d) sugar
3. 3.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a tub of water (d) a battery cell
4. 4.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
5. 5.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) water (c) a battery cell (d) turmeric powder
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is the one thing we change. (a) False (b) True
8. 8.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the swimmer (d) water from the oars
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) turmeric powder (d) two chairs
10. 10.True or false: sugar is needed for the dissolving test. (a) True (b) False
11. 11.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
12. 12.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they mix for ever (c) they separate again (d) they turn to honey
13. 13.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) steel is very light (d) sea water is warm
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) True (b) False
15. 15.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) whether the card stays (c) the same glass
18. 18.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
20. 20.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is kept the same. (a) True (b) False
22. 22.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
23. 23.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) do not lick the spoon (c) throw the glass (d) taste each layer
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) the cling film cover (b) how many drops form (c) sun or shade
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a mirror (c) sugar (d) cold water
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the amount of water (c) the stirring (d) the water temperature
27. 27.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) a feather (b) an open sheet of paper (c) a paper helicopter (d) a glass marble
29. 29.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a rubber eraser (d) a plastic ruler
30. 30.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) honey (c) sugar (d) cold water
31. 31.⚖️ 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 white paper (b) the amount of water (c) the time of day (d) the same window
32. 32.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) chew them (c) throw them away safely (d) give them to a baby
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) True (b) False
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) yeast
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) True (b) False
39. 39.🍯 Which of these is denser than water? (a) a coin (b) air (c) an ice cube (d) a cork
40. 40.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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