Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 815 · 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 paper clip is needed for the paper helicopter. (a) True (b) False
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) False (b) True
3. 3.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
4. 4.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) a magnet pulls it (d) escaping air pushes it
5. 5.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
6. 6.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a strip of paper (c) a magnet (d) a pencil
7. 7.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a battery cell (c) yeast (d) a balloon
10. 10.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a big bowl (c) water (d) yeast
11. 11.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
12. 12.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to ice (c) some water evaporates (d) it turns to salt
13. 13.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) turmeric powder
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) brightness of rainbow (b) the same white paper (c) the same window (d) the amount of water
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
17. 17.🛟 Which of these floats on water? (a) a glass marble (b) a piece of thermocol (c) a coin (d) an iron nail
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a towel (d) a mirror
19. 19.🧺 Which of these is needed for the density tower? (a) cooking oil (b) yeast (c) a battery cell (d) a magnet
20. 20.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls fast (b) falls slowly
21. 21.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) a little shaking (d) lots of salt stirred in
22. 22.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the stickiest (c) it is the densest (d) it is yellow
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) a spoon (c) cooking oil (d) water with food colour
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a glass of water (d) food colour
25. 25.💧 Which change is this: snow turning to water? (a) melting (b) condensation (c) freezing (d) evaporation
26. 26.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
27. 27.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
28. 28.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) on top of the oil (c) in the water layer (d) in the honey layer
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) bright sunlight
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) a white flower (d) food colour
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🧺 Do we need water for the water cycle bowl? (a) not needed (b) needed
35. 35.🔍 Which is the odd one out? (a) wet hair drying (b) sweat drying on skin (c) wet clothes drying (d) drops under a pot lid
36. 36.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a spoon (c) water with food colour (d) a battery cell
37. 37.⚖️ 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) the size of the bowl (c) sun or shade
38. 38.True or false: sugar in icy water dissolves faster. (a) False (b) True
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.🍯 Which of these is denser than water? (a) cooking oil (b) an ice cube (c) very salty water (d) a ping-pong ball

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