Trash wheel saves ocean from Baltimore’s plastic-filled rivers

The video discusses a successful invention, Mr. Trash Wheel, designed by John Kellet to tackle plastic trash in Baltimore's harbor. Inspired by the need to address trash accumulation after rain, Kellet combined a water wheel with a hay baler design. The machine, powered by the Chesapeake River's current, uses a conveyor belt to collect various debris, funneling it into a dumpster. Since its launch in 2014, Mr. Trash Wheel has intercepted over 1.5 million tons of garbage, showcasing its effectiveness.

What motivated John Kellet to invent the machine for Baltimore City's harbor?

• To generate electricity for the city

• To create a new tourist attraction

• To improve the city's water sports facilities

• To reduce the plastic trash flowing into the harbor

What two components did Kellet combine to create Mr. Trash Wheel?

• A water wheel and a hay baler

• A wind turbine and a conveyor belt

• A solar panel and a rake

• A fishing net and a water pump

How does Mr. Trash Wheel collect debris from the water?

• By attracting trash with magnets

• By using a conveyor belt with rake-like teeth

• By deploying nets across the river

• By using a vacuum system

What role do the buoys play in the operation of Mr. Trash Wheel?

• They generate power for the machine

• They help funnel trash towards the machine

• They measure the water's current speed

• They signal when the dumpster is full

Since its launch, how much garbage has Mr. Trash Wheel intercepted?

• Over 1 million tons

• Over 2 million tons

• Over 500,000 tons

• Over 1.5 million tons