Work and Simple Machines

What is work???

• go to places and help people
• hammering nails
• job
• somebody tells you to do it 
• having a boss
• working at a job
• homework
• working out - exercise
• What is science work??? lifting, moving, pushing, pulling, pushing down

What does work have to do with simple machines?

• sometimes work involves simple machines
• work is different than simple machines
• they are different
• how to work simple machines
• makes work easier

We watched a video about work and simple machines.  This is what we found out:

• simple machines help us with our work
• make things move
• inclined plane is also known as a ramp
• Wedge: a chisel, a knife cutting cheese and an axe cutting wood.
• Screw: Spiral staircase, road wrapping around a mountain 
• Lever: a piece of wood trying to move a rock, a wheelbarrow, a see saw.  The lever must have a fulcrum - the point at which it moves
• Wheel and axel:  door knob, motor cycle and car
• Pulley: flag pole, allows someone to pull a heavy object easier.

What is a force???

• effort when trying to move an object