A green and yellow machine that cuts trees down with its saw.
What is a feller buncher?
100
Drillers,pickaxes,hammers,shovels,horse-drawn ploughs,and cedar canoes.
What compound machines were used over time?
100
You create a compound machine.
What happens when you combine the simple machines together?
100
The horse drawn ploughs, canoes, and hammers.
What are some compound machines that changed over time?
200
A huge machine that travels coal through cleaning machines to remove the unwanted rock from the coal.
What is a conveyor belt?
200
they use axes,physical effort, and saws.
What tools do they use in the past?
200
Wheel and axle, a wedge, a screw, and levers.
What compound machines can you find in a can opener?
200
The mechanical changes to create better advantages or change advantages.
What happens when you combine the mechanical advantages?
200
First the hammers were a rock and a stick tied together, then the hammers were created by blacksmiths, finally there are nail guns which are replacing the hammers.
What is the evolution of hammers?
300
They used horses and tied them to mine carts and pulled it out of the mine.
How did they moved coal in the past ?
300
They use Feller Bunchers and large trucks.
What machines do they use now?
300
A compound machine has 2 or more simple machines.
What is a compound machine?
300
Wheel and Axle=A little turn on the wheel creates a bigger turn on the wheel.
Fixed Pulley=You change the direction of your effort force.
What are the 2 advantages for a wheel and axle and a fixed pulley?
300
First there are canoes made out of cedar bark wood then the boats are now have a propellor that spins around to make the boat move instead of using lots of effort.
What is the evolution of boats?
400
They use backhoes to dig out dirt,coal,and rocks.
What machines do they use now?
400
One type of large truck is used to lift and move logs around the sawmill and the other type of truck is used to transport the finished lumber products.
What 2 large trucks are used in forestry?
400
It makes a compound machine that combines the advantages.
What happens when you combine simple machines.
400
First Class Lever=Changing the direction of the force you use.
Wedge=Changing the direction of your force.
What is the 2 advantages of a first class lever and a wedge?
400
Before they used lots of effort, a shovel, a pick, and a rake.Now they use large machines called graders to help build roads.
What is the evolution of making roads?
500
To lift coal they used backhoes, to move coal they used conveyor belts, and to load coal they used dump trucks.
What do they use now to lift coal,to move coal,and to load coal?
500
Large trucks are faster on roads and the feller buncher reduces damage to the ground because they carry the weight of a machine over a larger surface area.
What are the differences of machines with wheels and machines that run on tracks?
500
Hammers, canoes, horse drawn ploughs, and human effort have past over time.
What are some compound machines that past over time?
500
Wheel and Axle=A small turn on the wheel creates a big turn on the wheel.
What is the 1 advantages of the wheel and axle?
500
In the past they used horse drawn ploughs to plough the land but it took a long time to finish.Now they use tractor pulled ploughs to plough the land.