Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 204 · 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.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the slope of the string (c) distance it travels (d) how big we blow it
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
3. 3.💧 Which of these lets water climb up it? (a) a flower stem (b) a steel spoon (c) a glass marble (d) a piece of foil
4. 4.🔍 Which is the odd one out? (a) a stone (b) a fluff of cotton (c) a feather (d) an open sheet of paper
5. 5.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so the Sun moves (d) so it gets hot
7. 7.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the length of the blades (c) the paper clip
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the kind of sugar
10. 10.⚖️ 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) how much of each liquid (b) the order of pouring (c) the order of the layers (d) the same three liquids
11. 11.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.True or false: a medicine dropper works by magnetism. (a) False (b) True
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) wet clothes drying (b) dew on morning grass (c) wet hair drying (d) a puddle drying up
16. 16.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a steel spoon (c) a ping-pong ball (d) a feather
17. 17.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) a balloon (d) a ruler
18. 18.True or false: a fluff of cotton falls slowly through the air. (a) True (b) False
19. 19.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) straight down (c) it stays still (d) forward
20. 20.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
22. 22.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) escaping air pushes it (c) the string pulls it (d) a magnet pulls it
23. 23.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is magnetic (d) ice is very cold
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) True (b) False
25. 25.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a strip of paper (c) a pencil (d) a paper clip
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) the big log (d) neither of them
29. 29.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a big bowl (c) water (d) a balloon
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a battery cell (d) a stiff postcard
32. 32.True or false: air from the balloon goes backward. (a) True (b) False
33. 33.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same glass (c) the amount of water (d) the same window
35. 35.True or false: water with food colour is needed for the density tower. (a) True (b) False
36. 36.🛟 Which of these floats on water? (a) a cork (b) a steel spoon (c) a coin (d) a pebble
37. 37.🧺 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 mirror (d) a sheet of white paper
38. 38.⚖️ 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 measure it (c) we change it
39. 39.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a battery cell
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same

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