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The video tutorial explains the concept of loads, which are objects or groups of objects moved from one place to another. It discusses how loads can be lifted, lowered, and transported using various methods and machines like pulleys, levers, and bulldozers. The tutorial also highlights the role of people and machines in moving loads and encourages viewers to reflect on the concept of burdens by considering whether a shelf holds a load.

What is a load in the context of this lesson?

• A burden or number of things moved at once

• A place where trucks are parked

• A type of machine

• A type of vehicle

Which simple machine is used to lift loads?

• Wedge

• Pulley

• Screw

• Inclined plane

How do bulldozers move loads?

• By lifting them

• By carrying them on their backs

• By pushing aside obstacles

• By pulling them

What is the role of trams in moving loads?

• They clear paths

• They lift heavy objects

• They transport groups of people

• They transport goods

Is a shelf holding objects considered a load? Why?

• Yes, because it supports weight

• No, because it doesn't move

• No, because it is not a burden

• Yes, because it is a machine