Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 845 · 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 of these is needed for the float-or-sink test? (a) a towel for spills (b) a magnet (c) turmeric powder (d) a balloon
2. 2.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
3. 3.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a clock or timer (c) a comb (d) a teaspoon
4. 4.🔍 Which is the odd one out? (a) a pebble (b) honey (c) very salty water (d) a ping-pong ball
5. 5.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
6. 6.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) True (b) False
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) False (b) True
9. 9.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
10. 10.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
12. 12.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
13. 13.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) a results table (d) yeast
16. 16.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
17. 17.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) bright sunlight (d) yeast
18. 18.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) table salt (d) cooking oil
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the amount of clay (c) whether it floats
20. 20.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) glucose powder (d) sawdust
21. 21.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) a ruler (d) turmeric powder
22. 22.⚖️ 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 keep it the same (b) we change it (c) we measure it
23. 23.True or false: a compass needle works by magnetism. (a) False (b) True
24. 24.🌈 In VIBGYOR, what number colour is green?
25. 25.True or false: powdered sugar dissolves slower. (a) True (b) False
26. 26.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a mirror (c) a fridge magnet (d) a balloon rocket
27. 27.True or false: a mirror is needed for the paper helicopter. (a) True (b) False
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
29. 29.⚖️ 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 change it (c) we keep it the same
30. 30.🥄 Which of these dissolves in water? (a) small pebbles (b) food colour (c) sand (d) chalk powder
31. 31.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a strip of cloth (d) a flower stem
32. 32.True or false: water with food colour is not needed for the density tower. (a) False (b) True
33. 33.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🧺 Which of these is not needed for the density tower? (a) turmeric powder (b) honey (c) a spoon (d) a tall clear glass
36. 36.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
37. 37.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) a magnet pulls it (c) escaping air pushes it (d) the string pulls it
38. 38.True or false: a flower stem lets water climb up it. (a) True (b) False
39. 39.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) leave them wet (c) wipe them dry (d) slide on them
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) distance it travels (c) the same string (d) how big we blow it

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