Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 317 · 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.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
2. 2.True or false: the rocket goes backward. (a) True (b) False
3. 3.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
4. 4.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the length of the blades (c) the person dropping (d) the kind of paper
5. 5.🔍 Which is the odd one out? (a) a piece of thermocol (b) a coin (c) a dry leaf (d) a cork
6. 6.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
7. 7.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls fast (b) falls slowly
8. 8.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
9. 9.🚀 Which of these goes forward? (a) the balloon (b) gas from the rocket (c) air from the balloon (d) water from the oars
10. 10.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) a mirror (c) a balloon (d) a strip of paper
11. 11.True or false: a piece of chalk lets water climb up it. (a) False (b) True
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the stirring (c) the amount of water (d) time to dissolve
13. 13.🛟 Which of these sinks in water? (a) a dry leaf (b) a feather (c) an iron nail (d) a cork
14. 14.True or false: a pebble floats on water. (a) True (b) False
15. 15.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
16. 16.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar left unstirred (c) sugar stirred well (d) sugar in warm water
17. 17.⚖️ 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
18. 18.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
19. 19.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) a results table (c) a tub of water (d) a towel for spills
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) yeast (d) a magnet
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (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 measure it (b) we change it (c) we keep it the same
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) honey (c) a tall clear glass (d) a battery cell
24. 24.⚖️ 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 same three liquids”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.⚖️ 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
26. 26.💧 Which of these lets water climb up it? (a) a glass marble (b) a cotton thread (c) a steel spoon (d) a plastic ruler
27. 27.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it turns blue (d) so it gets hot
28. 28.⚖️ 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) how many drops form (b) sun or shade (c) the size of the bowl
29. 29.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
30. 30.🚁 Which of these falls fast through the air? (a) a feather (b) a toy parachute (c) a stone (d) an open sheet of paper
31. 31.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) it stays still (c) forward (d) backward
32. 32.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) gardening shears (c) a paper cutter (d) sharp kitchen shears
33. 33.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) True (b) False
35. 35.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the stirring (c) time to dissolve
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) time for colour to show (c) the length of the stem (d) the kind of flower
39. 39.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it still floats (c) it turns white (d) it dissolves
40. 40.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism

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