Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 336 · 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.True or false: a mirror is needed for the density tower. (a) False (b) True
2. 2.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
3. 3.🍯 Which of these is denser than water? (a) a pebble (b) a ping-pong ball (c) cooking oil (d) an ice cube
4. 4.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
5. 5.🛟 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
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
8. 8.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
9. 9.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🚁 Which of these falls slowly through the air? (a) a glass marble (b) a feather (c) a stone (d) a coin
12. 12.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a few hours of waiting (d) food colour
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) never look at the Sun (d) look at it in a mirror
16. 16.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) two clear glasses (c) a clock or timer (d) warm water
18. 18.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a teaspoon (c) sugar (d) cotton wool
19. 19.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
20. 20.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed
21. 21.🍯 Which of these is less dense than water? (a) honey (b) a ping-pong ball (c) very salty water (d) a pebble
22. 22.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
23. 23.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) yellow (c) violet (d) orange
24. 24.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a stone (c) a feather (d) a toy parachute
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) False (b) True
26. 26.True or false: yeast is needed for the density tower. (a) False (b) True
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a magnet (d) a sink or a bucket
28. 28.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
29. 29.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar left unstirred (c) sugar in icy water (d) a big sugar cube
30. 30.💧 Which change is this: snow turning to water? (a) freezing (b) melting (c) evaporation (d) condensation
31. 31.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) cling film (c) a small cup (d) a mirror
32. 32.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the same three liquids (c) the same glass (d) how much of each liquid
33. 33.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
34. 34.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
36. 36.⚖️ 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) sun or shade (b) the size of the bowl (c) the time we wait (d) how many drops form
37. 37.🧺 Which of these is needed for the dissolving test? (a) honey (b) cotton wool (c) a clock or timer (d) a comb
38. 38.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) steel is very light (d) its hollow shape
39. 39.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they never dry (c) faster (d) they turn to ice
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a balloon (c) a long string (d) turmeric powder

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