Worksheet ZX8TNR

Master simple machines! This Grade 6 science worksheet covers levers, pulleys, inclined planes, force, and work.

WATCH IT! STATION Directions: Watch the simple machine video and complete the sentences below by typing in the correct word(s). Work is when a force produces the motion of an object in the same directionas the motion. Simple machines make work easier because they require less force (input force) to perform the work. The equation for work is W=Force x Distance. An inclined plane can make work easier by increasingthe distance. Increasing the distance of an inclined plane reduces the amount of force needed to perform work. Machines Stations Reading (Kesler) Directions:Read the following passage and answer the questions below. READ IT STATION! Which is the best description of a fulcrum? The amount of effort applied to the lever The amount of mass the lever can lift The total length of the lever The point on which a lever rests or pivots Where is the fulcrum in a first class lever? Between the effort and the load On the right side of the effort and the load On the left side of the effort and the load A wheelbarrow is considered a _ class lever. First Second Third Fourth An example of a 3rd class level could be a _. Seesaw Wheelbarrow Hammer Balance scale Directions: Click on the link to the website. Click the start button and skip the intro. Read the directions and complete 4 trails of each and fill in the tables below (Change the force Change the number of pulleys). RESEARCH IT STATION! Directions: Click here to go to the pulleys website. Click the start button and skip the intro. Complete 4 trials of each and fill in the tables below (change the force change the number of pulleys). RESEARCH IT! STATION (TLF L1198 v9.0.0) Directions: Clickhere to go to the pulley website then click start. Skip the intro and complete 4 trials of each and fill in the tables below (change the force change the number of pulleys). RESEARCH IT! STATION Change the force # of pulleys Crate Mass (kg) Force applied by workers (N) Distance rope moves (m) Work Done: Force x Distance (J) 1 25 250 1 250 1 50 500 1 500 1 100 1000 1 1000 1 75 750 1 750 Change the number of pulleys # of pulleys Crate Mass (kg) Force applied by workers (N) Distance rope moves (m) Work Done: Force X Distance (J) 2 50 250 2 500 3 75 250 3 750 1 25 250 1 250 4 100 250 4 1000 ORGANIZE IT! STATION Directions Part 1:Match the following simple machines with the correct definition. Lever a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other Pulley a wheel with a grooved rim around which a cord passes over or under Incline Plane a plane inclined at an angle to the horizontal Wedge a piece of wood, metal, or some other material having one thick end and tapering to a then edge, that is driven between two objects or parts of an object to secure or separate them Wheel and Axle a simple machine consisting typically of a cylindrical drum to which a concentric wheel is firmly fastened to an axle Screw An incline plane wrapped around a point Directions Part 2:Sort the simple machine pictures into the correct group. Be sure you have the same number of pictures as the number in parenthesis. Lever (3) Pulley (3) Incline Plane: Ramp (2) Incline Plane: Wedge (3) Wheel and Axle (3) Screw (2) ASSESS IT! STATION1. An inclined plane increases the _ which decreases the _ needed for work to be done. force, distance distance, force distance, direction direction, force 2. A pulley system changes the _ of the applied force to decrease the amount of force needed for work to be done. direction matter density mass 3. Which of the following is not an example of a simple machine? an ax a ramp a motorcycle wheel a table 4. Which is the best description of a wedge? a single inclined plane an inclined plane wrapped around a post 2 inclined planes put together a wheel on a rod