Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 961 · 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 cycle bowl? (a) water (b) a big bowl (c) a magnet (d) sunlight
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.True or false: a pencil is needed for the paper helicopter. (a) False (b) True
4. 4.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic pin holder (c) a magnetic chess set (d) a fridge magnet
5. 5.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) cooking oil (b) a ping-pong ball (c) a pebble (d) an ice cube
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) yeast (d) a towel
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
10. 10.🧺 Which of these is needed for the dissolving test? (a) two clear glasses (b) honey (c) cotton wool (d) a balloon
11. 11.🛟 Which of these sinks in water? (a) a cork (b) a feather (c) a coin (d) a ping-pong ball
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.💧 Which of these is melting? (a) snow turning to water (b) a misty bathroom mirror (c) a pond icing over (d) wet hair drying
14. 14.True or false: the balloon goes backward. (a) True (b) False
15. 15.True or false: honey is needed for the density tower. (a) True (b) False
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the kind of paper (b) the length of the blades (c) time to reach the floor (d) the paper clip
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a balloon (c) a clock or timer (d) two clear glasses
18. 18.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it flies upward (c) it stays still in air (d) it spins round
19. 19.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.True or false: a strip of paper is needed for the paper helicopter. (a) True (b) False
22. 22.True or false: an empty capped bottle floats on water. (a) False (b) True
23. 23.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a strip of paper (c) a ruler (d) a balloon
24. 24.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the stickiest (c) it is the densest (d) it is the coldest
25. 25.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) in the oil layer (d) at the very bottom
26. 26.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) tiny drops of water (d) many colours mixed
27. 27.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.True or false: a rubber eraser lets water climb up it. (a) False (b) True
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.True or false: sugar stirred well dissolves slower. (a) False (b) True
32. 32.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a magnet (c) a drinking straw (d) a mirror
33. 33.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a paper helicopter (c) a coin (d) a glass marble
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) yeast
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) distance it travels (c) the same straw (d) the slope of the string
36. 36.True or false: sugar left unstirred dissolves slower. (a) True (b) False
37. 37.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) faster (c) they turn to ice (d) slower
38. 38.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) sunshine (b) rain (c) wind (d) lightning
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is the one thing we change. (a) True (b) False

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