Weather
WEATHER
Earth's Blanket
Water Cycle
Clouds
Weather Instruments
Weather pattens
Weather Maps
Climate Zones
Quizzes, Worksheets, Websites
SIMPLE MACHINES
Inclined Plane
Wedge
Screw
Lever
Wheel and Axle
Pulley
CRCT PRACTICE TESTS
ECOSYSTEMS
habitats
non-living things
living things
MOTION AND FORCE
MOON PHASES
Pulley
*a simple machine made of rope fitted around the rim of a fixed wheel called a pulley
*some increase the force
*others change the direction of the force
*elevators
*flagpoles
*rope for wells
*unloading heavy
boxes on a dock