What's this?
It's load.
What's this?
It's ballast.
What's this?
It's a seesaw.
What is it?
It's a steel cable.
What's this?
It's a pendulum clock.
What's this?
It's a submarine.
What's this?
It's balance.
What are these?
They're scales.
What's this?
It's weight.
What is it?
It's an elevator.
What's this?
It's effort.
What's this?
It's a ship.
What's wrong with them?
They're seasick.
What are these?
They're scissors.
What's this?
It's a sand clock.
What's this?
It's a lever.