Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 27 · 40 questions

What you do (Float or sink?): 1. Fill a tub with water on a towel, with an adult nearby. 2. Guess “float” or “sink” for each object and write it in a table. 3. Gently place each object on the water and write what happens. 4. Press the sinking clay into a boat shape and try again; wipe up spills.

1. 1.True or false: a glass marble sinks in water. (a) True (b) False
2. 2.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it turns white (c) it dissolves (d) it sinks
3. 3.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) it has a magnet (d) its hollow shape
4. 4.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) a balloon
6. 6.🛟 Which of these sinks in water? (a) a cork (b) a feather (c) an ice-cream stick (d) a glass marble
7. 7.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
8. 8.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
9. 9.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
10. 10.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an empty capped bottle (c) a cork (d) a coin
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a mirror
12. 12.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) the big log (d) neither of them
13. 13.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
14. 14.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to keep children safe (d) to splash everyone
15. 15.🔍 Which is the odd one out? (a) a ball of clay (b) a dry leaf (c) a metal key (d) a steel spoon
16. 16.🧊 Why does an ice cube float on water? (a) ice is very cold (b) water is sticky (c) ice is less dense (d) ice is magnetic
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🔍 Which is the odd one out? (a) a ping-pong ball (b) an ice-cream stick (c) a steel spoon (d) a dry leaf
19. 19.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
20. 20.🛟 Which of these floats on water? (a) a piece of thermocol (b) a ball of clay (c) a pebble (d) a steel spoon
21. 21.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it sinks faster (d) it can float
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) yeast (c) small test objects (d) a towel for spills
23. 23.🌊 What pushes a floating cork upward? (a) the water (b) the air above (c) the tub (d) the cork itself
24. 24.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a results table (d) a battery cell
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the amount of clay (c) the shape of the clay (d) the tub of water
26. 26.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) leave water on the floor (d) play near a deep pond
27. 27.🔍 Which is the odd one out? (a) a steel spoon (b) a coin (c) an ice cube (d) a ball of clay
28. 28.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
29. 29.True or false: a steel spoon floats on water. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a ping-pong ball (b) an iron nail (c) a piece of thermocol (d) a feather
31. 31.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
32. 32.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
33. 33.True or false: a coin sinks in water. (a) False (b) True
34. 34.True or false: a ball of clay sinks in water. (a) False (b) True
35. 35.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a results table (c) a balloon (d) a magnet
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
38. 38.True or false: a dry leaf sinks in water. (a) False (b) True
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) turmeric powder (c) a results table (d) a tub of water
40. 40.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed

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