Science 3 Assignment Sheet for Week of December 12, 2005

While studying simple machines, historical resources will be utilized. During class the students will be involved in writing an article on simple machines for a Roman newspaper. They will also be drawing to make a poster of the 6 simple machines. I apologize for confusion regarding the assignments last week.

Wednesday, December 13

¨ Complete poster with six simple machines according to poster handout.

¨ Review all chants and continue learning new chant.

¨ Continue to read from

Vocabulary is given for reference:

Force: Something that changes the position, shape, or speed of an object.

Fulcrum: the point on which a bar rests.

Work: The amount of work done is calculated by multiplying the force times the distance the object has traveled. Work = distance x force

Inclined plane: a leaning, slanted flat surface used as a simple machine such as a ladder or ramp.

Lever: a bar that turns on a point. An example of one is a shovel.

Wedge: Two small inclined planes put together used to move into or under an object. An example is chisel or knife blade.

Screw: A screw uses an inclined plane as it’s spiral ridge winds round and round.

Pulley: A pulley is a wheel with a groove around its outside. It changes the direction of the force. An example is a flagpole.

Wheel and Axle: A wheel is fixed to the shaft such as a doorknob.