Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 469 · 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.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) yeast (c) honey (d) cooking oil
2. 2.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
3. 3.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the water turns to ice (d) the glass breaks
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the same glass (b) the order of the layers (c) the order of pouring
5. 5.🌈 In VIBGYOR, what number colour is green?
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a mirror (d) a clear glass of water
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
9. 9.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
10. 10.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a glass marble (d) a flower stem
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the kind of clay (c) the shape of the clay
14. 14.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) pour it on the floor (d) throw the glass
17. 17.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
18. 18.True or false: drops on a cold glass is condensation. (a) True (b) False
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) False (b) True
20. 20.🛟 Which of these sinks in water? (a) a feather (b) a dry leaf (c) a ping-pong ball (d) a glass marble
21. 21.💧 Which of these is freezing? (a) sweat drying on skin (b) a pond icing over (c) drops under a pot lid (d) a misty bathroom mirror
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
23. 23.🔍 Which is the odd one out? (a) an ice-cream stick (b) a coin (c) an empty capped bottle (d) a dry leaf
24. 24.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a feather (c) a crumpled paper ball (d) a fluff of cotton
25. 25.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
27. 27.True or false: a ruler is needed for the paper helicopter. (a) False (b) True
28. 28.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it spins round (c) it flies upward (d) it turns into a ball
29. 29.🔍 Which is the odd one out? (a) table salt (b) chalk powder (c) sugar (d) food colour
30. 30.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) the water increases (c) it turns to salt (d) it turns to ice
31. 31.🛟 Which of these floats on water? (a) a metal key (b) a pebble (c) a ball of clay (d) an ice cube
32. 32.🚁 Which of these falls slowly through the air? (a) a stone (b) a coin (c) a fluff of cotton (d) a glass marble
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a magnet
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.True or false: a glass marble lets water climb up it. (a) True (b) False
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
38. 38.🧺 Which of these is not needed for the water cycle bowl? (a) a battery cell (b) a small cup (c) sunlight (d) a big bowl
39. 39.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.True or false: a balloon is not needed for the dissolving test. (a) False (b) True

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