Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 642 · 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.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) lots of salt stirred in (d) more plain water
2. 2.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) yeast (c) a mirror (d) a magnet
3. 3.⚖️ 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
4. 4.⚖️ 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 change it (c) we measure it
5. 5.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
6. 6.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) a mirror (d) turmeric powder
7. 7.🧺 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 tub of water (d) a balloon
8. 8.🧺 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 results table (d) yeast
9. 9.True or false: a dry leaf floats on water. (a) True (b) False
10. 10.⚖️ 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 change it (b) we keep it the same (c) we measure it
11. 11.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it can float (d) it dissolves
12. 12.🛟 Which of these floats on water? (a) a glass marble (b) a coin (c) a ping-pong ball (d) an iron nail
13. 13.True or false: an ice cube floats on water. (a) False (b) True
14. 14.🧺 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 tub of water (d) a results table
15. 15.True or false: a metal key floats on water. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a feather (b) a piece of thermocol (c) a ball of clay (d) an ice cube
17. 17.🧺 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 battery cell (d) a towel for spills
18. 18.🌊 What pushes a floating cork upward? (a) the water (b) the air above (c) the tub (d) the cork itself
19. 19.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) turmeric powder (c) a towel for spills (d) a mirror
20. 20.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) it has a magnet (d) sea water is warm
21. 21.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to splash everyone (d) to keep children safe
22. 22.True or false: an ice-cream stick sinks in water. (a) True (b) False
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
24. 24.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) turmeric powder (c) a towel for spills (d) a results table
27. 27.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
28. 28.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it still floats (d) it sinks
29. 29.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) True (b) False
31. 31.True or false: a piece of thermocol floats on water. (a) True (b) False
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) the shape of the clay (c) whether it floats
33. 33.True or false: an ice cube sinks in water. (a) True (b) False
34. 34.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
35. 35.🔮 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
36. 36.🛟 Does a cork float or sink in water? (a) floats (b) sinks
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
39. 39.🛟 Which of these floats on water? (a) a pebble (b) a steel spoon (c) a piece of thermocol (d) an iron nail
40. 40.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True

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