How Does Your Boat Float?

What is density?

• The weight of an object

• The mass of an object per unit of volume

• The size of an object

• The force exerted by surrounding fluids

What is buoyancy?

• The weight of an object

• The mass of an object per unit of volume

• The force exerted by surrounding fluids

• The size of an object

What determines whether an object can float or sink?

• Weight

• Density

• Size

• Buoyancy

When will an object float in water?

• When its weight is less than the weight of the water it displaces

• When its weight is greater than the weight of the water it displaces

• When its size is smaller than the size of the water it displaces

• When its density is greater than the density of the water it displaces

What happens when an object sinks too far in water?

• It will float on the water

• It will fill with water and sink

• It will displace more water

• It will become lighter

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Why can a steel ship float?

• Because steel is a less dense material

• Because steel ships are filled with air

• Because the density of a boat depends on what is inside it

• Because steel ships are lighter than water

What can increase the density of a ship?

• Filling it with cargo or people

• Making it larger in size

• Adding more air inside the ship

• Decreasing the weight of the ship

What are Plimsoll lines on cargo ships used for?

• To mark the weight capacity of the ship

• To indicate the ship's speed

• To show when the ship is full enough

• To measure the ship's length

According to Archimedes' Principle, what happens when a boat is placed in water?

• The boat sinks to the bottom

• The boat displaces some water

• The boat becomes lighter

• The boat floats on the water

What is the average density of a clay boat compared to the density of water?

• Greater

• Equal

• Less

• Cannot be determined