Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 717 · 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.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it turns blue (c) it falls upward (d) it does not fall
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
3. 3.⚖️ 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
4. 4.💧 Which change is this: ice becoming water? (a) condensation (b) melting (c) evaporation (d) freezing
5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in warm water (c) a big sugar cube (d) sugar stirred well
8. 8.True or false: a feather falls fast through the air. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a toy parachute (b) a stone (c) a paper helicopter (d) an open sheet of paper
10. 10.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a fridge magnet (d) a drinking straw
11. 11.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
12. 12.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it travels less far (d) it speeds up
13. 13.True or false: a pond icing over is melting. (a) False (b) True
14. 14.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a magnetic pin holder (d) a magnetic chess set
15. 15.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) slower (c) it stops in the air (d) faster
16. 16.🚁 Which of these falls slowly through the air? (a) a toy parachute (b) a coin (c) a steel spoon (d) a crumpled paper ball
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a stiff postcard (d) a sink or a bucket
18. 18.True or false: a spoon is needed for the density tower. (a) True (b) False
19. 19.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) True (b) False
21. 21.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
22. 22.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
23. 23.True or false: a feather floats on water. (a) False (b) True
24. 24.🚀 Which of these goes forward? (a) the balloon (b) water from the oars (c) gas from the rocket (d) water a swimmer pushes
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the same tape (c) distance it travels (d) the slope of the string
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is the one thing we change. (a) True (b) False
27. 27.True or false: water with food colour is not needed for the density tower. (a) True (b) False
28. 28.🍯 Which of these is less dense than water? (a) honey (b) a glass marble (c) a coin (d) cooking oil
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a balloon (d) a towel
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the cling film cover (b) the amount of water (c) sun or shade (d) the size of the bowl
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) whether it floats (c) the kind of clay (d) the shape of the clay
32. 32.🔍 Which is the odd one out? (a) a dry leaf (b) an ice cube (c) a coin (d) a cork
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
35. 35.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
36. 36.⚖️ 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) the same white paper (b) the amount of water (c) brightness of rainbow (d) the same glass
37. 37.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is kept the same. (a) True (b) False
38. 38.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.📘 What does “dense” mean? (a) very colourful (b) very hot (c) very thin (d) heavy for its size
40. 40.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it can pop loudly (c) it gets too heavy (d) it turns into a kite

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids