Dock

A fisherman steps off a boat, which is in the water, onto a dock. What happens?

• The boat and dock do not move

• The boat moves toward the dock

• The boat moves away from the dock

• The dock moves away from the boat

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The reason a boat bounces off the dock when it hits it.

• The boat and the dock repel each other.

• When the boat exerts a force on the dock, the dock exerts a force on the boat.

Tags

NGSS.MS-PS2-1

A boat is docked at a harbor. If the water level rises, what happens to the boat?

• The boat moves up with the water level

• The boat stays at the same level

• The boat moves down

• The boat tilts to one side

What is the primary purpose of a dock in a harbor?

• To anchor ships permanently

• To facilitate loading and unloading of goods

• To serve as a fishing platform

• To prevent water pollution

Which force is primarily responsible for keeping a boat stationary at a dock?

• Gravitational force

• Buoyant force

• Frictional force

• Magnetic force

When a boat is tied to a dock, what type of energy is primarily stored in the rope?

• Kinetic energy

• Potential energy

• Thermal energy

• Chemical energy

Tags

NGSS.MS-PS3-2

A dock is made of wood. What property of wood makes it suitable for building docks?

• High density

• Buoyancy

• Electrical conductivity

• Transparency

If a dock is floating on water, what principle explains its buoyancy?

• Archimedes' principle

• Pascal's principle

• Bernoulli's principle

• Newton's third law

What happens to the pressure on a dock as the water level increases?

• Pressure increases

• Pressure decreases

• Pressure remains the same

• Pressure fluctuates

Which material is least likely to be used in the construction of a dock?

• Concrete

• Steel

• Wood

• Glass