Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 398 · 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.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a ball of clay (c) an ice-cream stick (d) a feather
2. 2.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) a little shaking (c) more plain water (d) lots of salt stirred in
3. 3.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) its hollow shape (d) sea water is warm
4. 4.🧺 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 towel for spills (d) a battery cell
5. 5.🔍 Which is the odd one out? (a) a pebble (b) an iron nail (c) a metal key (d) a ping-pong ball
6. 6.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
7. 7.🧊 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
8. 8.🔍 Which is the odd one out? (a) a dry leaf (b) a ball of clay (c) an ice cube (d) a piece of thermocol
9. 9.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
10. 10.True or false: a piece of thermocol sinks in water. (a) True (b) False
11. 11.🛟 Does a coin float or sink in water? (a) floats (b) sinks
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a towel for spills (d) a tub of water
13. 13.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it sinks faster (c) it can float (d) it dissolves
14. 14.🔍 Which is the odd one out? (a) a feather (b) a dry leaf (c) an ice cube (d) a glass marble
15. 15.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) wipe up spills at once (d) leave water on the floor
16. 16.⚖️ 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 kind of clay (b) the tub of water (c) the shape of the clay (d) the amount of clay
17. 17.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
18. 18.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a mirror (d) a towel for spills
20. 20.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a balloon (c) turmeric powder (d) a tub of water
21. 21.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a mirror (c) a towel for spills (d) a balloon
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it sinks (c) it turns blue (d) it floats higher
24. 24.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
25. 25.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
26. 26.🛟 Which of these floats on water? (a) a ball of clay (b) a steel spoon (c) an iron nail (d) an ice-cream stick
27. 27.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) yeast (c) a tub of water (d) a results table
28. 28.🌊 What pushes a floating cork upward? (a) the water (b) the tub (c) the cork itself (d) the air above
29. 29.🛟 Does a feather float or sink in water? (a) sinks (b) floats
30. 30.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) neither of them (c) the small pebble (d) the big log
31. 31.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
32. 32.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
33. 33.🔍 Which is the odd one out? (a) an ice cube (b) a metal key (c) a dry leaf (d) a ping-pong ball
34. 34.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
35. 35.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
36. 36.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
37. 37.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed

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