Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 771 · 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: turmeric powder is needed for the paper helicopter. (a) True (b) False
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
4. 4.True or false: a battery cell is needed for the paper helicopter. (a) False (b) True
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the room it stands in (b) the length of the stem (c) time for colour to show
6. 6.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) turmeric powder (d) a sheet of white paper
7. 7.⚖️ 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) False (b) True
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 order of the layers”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) turmeric powder (c) safety scissors (d) a magnet
10. 10.True or false: a puddle drying up is evaporation. (a) False (b) True
11. 11.🍯 Which of these is less dense than water? (a) a glass marble (b) honey (c) a coin (d) a cork
12. 12.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) pour it on the floor (d) do not lick the spoon
13. 13.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
15. 15.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an ice cube (c) a ball of clay (d) a feather
16. 16.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) yeast (c) vinegar (d) two chairs
17. 17.True or false: a ruler is needed for the paper helicopter. (a) True (b) False
18. 18.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
21. 21.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
22. 22.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) the swimmer (d) air from the balloon
23. 23.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) some water evaporates (c) it turns to ice (d) it turns to salt
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.🚀 Which of these goes forward? (a) water from the oars (b) gas from the rocket (c) the rowing boat (d) water a swimmer pushes
26. 26.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass sweats (b) vapour in air cools (c) the glass leaks (d) ice escapes the glass
27. 27.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a pencil (c) yeast (d) a paper clip
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
29. 29.⚖️ 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) False (b) True
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a magnet (d) a sunny window
31. 31.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) on top of the oil (d) under the honey
33. 33.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it floats higher (d) it turns blue
35. 35.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) more friction, less far (c) it goes faster (d) no change at all
36. 36.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of the layers (b) how much of each liquid (c) the same glass (d) the same three liquids
37. 37.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it dissolves (c) it floats (d) it sinks
38. 38.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
40. 40.True or false: a coin is less dense than water. (a) False (b) True

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