Exploration 1: Representing Orbits (Per 5) by BRIAN LOPEZ https://padlet.com/b_lopez_/L1Ex1_5 Add any main ideas, terms, pictures, questions, and anything else you think is important under your group's assigned section. en-us 2021-01-27 03:30:03 UTC 2021-01-27 17:48:47 UTC hello@padlet.com https://padlet.com/b_lopez_/L1Ex1_5/wish/1132750366 The planets have elliptical orbits that are nearly circular.]]> 2021-01-27 17:16:29 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132750366 https://padlet.com/b_lopez_/L1Ex1_5/wish/1132759957 Motion of planets in space are observable]]> 2021-01-27 17:18:02 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132759957 https://padlet.com/b_lopez_/L1Ex1_5/wish/1132763699 Ellipse- a closed curve defined by two points called foci.]]> 2021-01-27 17:18:40 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132763699 https://padlet.com/b_lopez_/L1Ex1_5/wish/1132770729 As an object in orbit moves closer to the sun, its speed increases]]> 2021-01-27 17:19:51 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132770729 https://padlet.com/b_lopez_/L1Ex1_5/wish/1132772960 distance from one focus to any point on the ellipse and then to the other focus is constant.]]> 2021-01-27 17:20:12 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132772960 https://padlet.com/b_lopez_/L1Ex1_5/wish/1132775142 An orbit and the sun lie in a plane called the orbital plane]]> 2021-01-27 17:20:33 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132775142 https://padlet.com/b_lopez_/L1Ex1_5/wish/1132781609 The eccentricity of an ellipse, e, is a measure of its elongation—how much it deviates from a circle]]> 2021-01-27 17:21:38 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132781609 https://padlet.com/b_lopez_/L1Ex1_5/wish/1132784007 The motion of planets in space is observable, even from a great distance.

An orbit and the sun lie in a plane called the orbital plane.]]> 2021-01-27 17:22:01 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132784007 T^2 ♾ a^3 is Kepler’s third law https://padlet.com/b_lopez_/L1Ex1_5/wish/1132786127 2021-01-27 17:22:24 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132786127 https://padlet.com/b_lopez_/L1Ex1_5/wish/1132787310 The focus distance relative to the size of the ellipse gives the eccentricity: e= c/a = distance between center and focus/ length of semimajor axis]]> 2021-01-27 17:22:37 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132787310 As an object moves away from the sun, its speed decreases. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132787650 2021-01-27 17:22:40 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132787650 elongated means a long in relation to width, especially unusually so https://padlet.com/b_lopez_/L1Ex1_5/wish/1132787768 2021-01-27 17:22:41 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132787768 The length of the semimajor axis gives the planet's average distance from the sun. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132788333 2021-01-27 17:22:48 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132788333 Its kinetic energy (KE) increases and decreases with its speed. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132793894 2021-01-27 17:23:44 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132793894 Every planet has a different orbit around the sun. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132797896 2021-01-27 17:24:23 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132797896 Distance is given in astronomical units (AU) which is Earth's average distance from the sun. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132798446 2021-01-27 17:24:29 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132798446 The relationship can be stated as T square times a cube, also known as Kelper's third law. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132806747 2021-01-27 17:25:54 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132806747 In a planetary orbit, the length of the semimajor axis is the average of the planet's greatest and least distance from the sun https://padlet.com/b_lopez_/L1Ex1_5/wish/1132811351 2021-01-27 17:26:33 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132811351 Whats the difference between kinetic energy and potential energy? https://padlet.com/b_lopez_/L1Ex1_5/wish/1132813501 2021-01-27 17:26:54 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132813501 Planetary orbits differ from nearly circular to elongated and skinny, https://padlet.com/b_lopez_/L1Ex1_5/wish/1132818104 2021-01-27 17:27:43 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132818104 The square of the orbital period is proportioned to the cube of the semimajor axis. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132821040 2021-01-27 17:28:12 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132821040 an ellipse equals the distance between the center and focus over length of semimajor axis. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132828128 2021-01-27 17:29:24 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132828128 Laws describing planetary motion = 1st law) Each planet orbits the sun in an eclipse with the sun @ one focus, 2nd law) imaginary line from the sun to a planet sweeps out equal areas and equal times, 3rd law) The square of the orbital period is proportional to the cube of the orbit’s semimajor axis, which means a^3=kT where k=constant. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132830278 2021-01-27 17:29:48 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132830278 the time to complete one orbit is the planet's T. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132836395 2021-01-27 17:30:40 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132836395 first law: each planet orbits the sun in an ellipse with the sun at one side. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132853499 2021-01-27 17:33:34 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132853499 https://padlet.com/b_lopez_/L1Ex1_5/wish/1132875869 These orbits have been put in order based on the shape. Think about putting them in order of the distance of the sun from the center point of the orbit. Mark the orbits that would change positions, or draw a check mark if the order would not change.]]> 2021-01-27 17:37:33 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132875869 Second law: An imaginary line from the sun to a planet sweeps outequal areas in equal times. (This law relates the speed of a planet toits distance from the sun.) https://padlet.com/b_lopez_/L1Ex1_5/wish/1132935895 2021-01-27 17:48:16 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132935895 Third law: The square of the orbital period is proportional to the cube of the orbit’ssemimajor axis. That is, a3= kT2 where k is a constant. https://padlet.com/b_lopez_/L1Ex1_5/wish/1132938624 2021-01-27 17:48:47 UTC https://padlet.com/b_lopez_/L1Ex1_5/wish/1132938624