Water & Floating
What happens to a rock when you put it in water?
It sinks.
What do ships float on?
Water
Question: Is a small rock heavy or light for its size?
Heavy
Question: What is density?
How much stuff is packed into something.
True or False: Rocks can float on water.
False
Question: What happens to a floating boat?
Answer: It stays on top of the water.
Are ships usually very large or very small?
Very large.
Question: Does a rock usually float?
no
Is a rock more dense or less dense than water?
More dense.
True or False: Ships can float on water.
True
Question: Does a rock float or sink?
Sink
Question: What are many ships made from?
Steel
Question: Can something very big still float?
Yes
Question: If something is less dense than water, will it float or sink?
Float
True or False: Air can help a ship float.
True
What force pulls things down?
Gravity
Question: Does steel normally sink or float?
Sink
Which sinks: a rock or a ship?
rock
What does a ship need to push away to float?
Water
True or False: Adding too much weight can make a ship sink.
True
Question: What is underneath a floating boat?
water
Why doesn't a steel ship sink?
Because the ship is hollow.
What is inside a hollow ship?
Air
What happens when a ship gets heavier?
It sinks deeper into the water
True or False: A small object can never sink.
False