Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 644 · 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 evaporation? (a) sweat drying on skin (b) butter going runny (c) drops under a pot lid (d) ice becoming water
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the water temperature (c) the amount of water (d) time to dissolve
3. 3.🔍 Which is the odd one out? (a) air (b) a glass marble (c) a coin (d) a pebble
4. 4.True or false: a cork floats on water. (a) False (b) True
5. 5.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
6. 6.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a sink or bucket (d) over a laptop
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the tub of water (b) whether it floats (c) the shape of the clay (d) the amount of clay
8. 8.True or false: sugar in icy water dissolves faster. (a) False (b) True
9. 9.True or false: an ice cube is less dense than water. (a) True (b) False
10. 10.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
11. 11.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) coloured water (c) cooking oil (d) the spoon
12. 12.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
14. 14.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) sunlight (c) a big bowl (d) a balloon
15. 15.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
16. 16.True or false: yeast is not needed for the water cycle bowl. (a) False (b) True
17. 17.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a battery cell
19. 19.⚖️ 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 what we measure. (a) False (b) True
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) the same glass (c) the same card (d) whether the card stays
21. 21.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
22. 22.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) faster (c) slower (d) it floats up
23. 23.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) safety scissors (c) a ruler (d) a paper clip
24. 24.⚖️ 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 keep it the same (c) we change it
25. 25.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
26. 26.True or false: a cork is less dense than water. (a) True (b) False
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
28. 28.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) give them to a baby (d) throw them away safely
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) cold water (c) a clock or timer (d) a magnet
31. 31.True or false: sugar is needed for the dissolving test. (a) True (b) False
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) True (b) False
33. 33.🛟 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
34. 34.⚖️ 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) True (b) False
35. 35.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
36. 36.💧 Which change is this: water becoming ice? (a) freezing (b) condensation (c) evaporation (d) melting
37. 37.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) the same straw (c) distance it travels (d) how big we blow it
39. 39.🧺 Which of these is not needed for the density tower? (a) a spoon (b) cooking oil (c) a tall clear glass (d) a balloon
40. 40.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism

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