Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 423 · 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 not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a mirror
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) safety scissors (d) a balloon
3. 3.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
4. 4.⚖️ 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 the layers is what we measure. (a) True (b) False
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a spoon (c) yeast (d) honey
6. 6.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a glass marble (d) a paper towel
7. 7.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is heavy (d) hot water is magnetic
8. 8.🧺 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) turmeric powder
9. 9.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it dissolves (c) it turns white (d) it sinks
10. 10.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar stirred well (c) sugar in warm water (d) powdered sugar
11. 11.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it fall slower (b) to stop the spinning (c) to weigh down the bottom (d) to make it magnetic
12. 12.🧺 Which of these is not needed for the density tower? (a) honey (b) a tall clear glass (c) a balloon (d) a spoon
13. 13.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the water turns to ice (d) the card flies away
14. 14.True or false: honey is not needed for the dissolving test. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a cork (b) a dry leaf (c) a feather (d) a pebble
16. 16.🚁 Which of these falls slowly through the air? (a) a stone (b) a coin (c) a glass marble (d) a paper helicopter
17. 17.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a steel spoon (c) an open sheet of paper (d) a stone
18. 18.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.True or false: honey is needed for the density tower. (a) False (b) True
22. 22.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
23. 23.🧺 Which of these is not needed for the density tower? (a) a battery cell (b) a spoon (c) honey (d) a tall clear glass
24. 24.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the cling film cover (b) sun or shade (c) the amount of water (d) how many drops form
26. 26.📘 What do we call water with sugar dissolved in it? (a) a magnet (b) a solution (c) a rainbow (d) a crystal
27. 27.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
29. 29.🌈 How many colours do we name in a rainbow (VIBGYOR)?
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a mirror (d) turmeric powder
31. 31.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a results table (d) a towel for spills
32. 32.🛟 Which of these sinks in water? (a) a cork (b) an empty capped bottle (c) a dry leaf (d) a ball of clay
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same straw (c) how big we blow it (d) the same string
35. 35.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the amount of clay (c) whether it floats (d) the shape of the clay
37. 37.True or false: dew on morning grass is freezing. (a) True (b) False
38. 38.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) a spoon (c) water with food colour (d) yeast
39. 39.🧺 Which of these is needed for the density tower? (a) a balloon (b) a battery cell (c) a mirror (d) cooking oil
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) cold water (c) sugar (d) a teaspoon

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