Before you begin: you may either copy and paste this document into a word processing program of your choice or print this page. to complete the chart below: go back to the lesson on the historical models. list the characteristics or facts about the historical models. then use the information in this lesson to make a list of the characteristics or facts about the current model. look for similar characteristics and facts and place them in the center portion of the table. put the remaining different characteristics in the appropriate column. then, fill out the chart below. current model of the solar system vs. historical model of the solar system historical solar system model (differences) similarities current solar system model (differences) 1. 2. 3. 4. 1. 2. 3. 1. 2. 3. 4.

You and a friend (alex) are at a a tree-top adventure park .. . part of the course requires you to climb up a rope. you both climb the same rope in the same amount of time. however, the tension in the rope is greater when alex climbs. who did the most work? alex did - more tension means more force - more force means more work was done you did - less tension means less force - less force means more work was done to find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? when more work was done, the couch was moved less. when more work was done, the couch was moved further. when more work was done, the couch wasn't moved at all. when more work was done, the couch was moved the same distance.

When an object is heated it contracts. a. true b. false

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.