Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 791 · 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.🧊 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
2. 2.🔍 Which is the odd one out? (a) an ice cube (b) a cork (c) a coin (d) a feather
3. 3.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
4. 4.True or false: a glass marble floats on water. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a metal key (b) a feather (c) a dry leaf (d) a cork
6. 6.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it sinks faster (c) it can float (d) it turns to stone
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the kind of clay
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the shape of the clay (c) the amount of clay (d) the kind of clay
9. 9.True or false: a ball of clay floats on water. (a) False (b) True
10. 10.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
11. 11.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it sinks (c) it dissolves (d) it still floats
12. 12.🌊 What pushes a floating cork upward? (a) the air above (b) the cork itself (c) the tub (d) the water
13. 13.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a results table (c) a towel for spills (d) a tub of water
14. 14.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) run around the tub (d) wipe up spills at once
15. 15.🛟 Which of these sinks in water? (a) a dry leaf (b) a cork (c) a steel spoon (d) a ping-pong ball
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🛟 Which of these sinks in water? (a) a cork (b) a ball of clay (c) an ice-cream stick (d) a piece of thermocol
18. 18.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it dissolves (c) it floats (d) it sinks
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a magnet (d) a results table
20. 20.🛟 Which of these sinks in water? (a) a cork (b) a dry leaf (c) an empty capped bottle (d) an iron nail
21. 21.🛟 Which of these sinks in water? (a) an ice-cream stick (b) an empty capped bottle (c) an ice cube (d) a pebble
22. 22.🔍 Which is the odd one out? (a) a piece of thermocol (b) an empty capped bottle (c) a cork (d) a pebble
23. 23.🔍 Which is the odd one out? (a) an ice-cream stick (b) a piece of thermocol (c) an ice cube (d) a ball of clay
24. 24.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) turmeric powder (c) a magnet (d) a balloon
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a results table (c) a mirror (d) a battery cell
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a tub of water (d) a balloon
27. 27.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
28. 28.True or false: a feather floats on water. (a) False (b) True
29. 29.🛟 Which of these floats on water? (a) a ball of clay (b) a pebble (c) a dry leaf (d) an iron nail
30. 30.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
31. 31.🛟 Does a cork float or sink in water? (a) floats (b) sinks
32. 32.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) neither of them (c) both of them (d) the small pebble
33. 33.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) yeast (c) a balloon (d) small test objects
34. 34.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
35. 35.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a feather (c) a dry leaf (d) a glass marble
36. 36.🛟 Which of these floats on water? (a) a coin (b) a steel spoon (c) a ball of clay (d) an ice cube
37. 37.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
38. 38.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) the shape of the clay (c) whether it floats

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