Week of October 15, 2013

Where's Voyager going? optional reading
http://www.newsela.com/articles/space-voyager/id/1111/

Tuesday-period 8- go over tests
periods-1,4 gravity!
periods 5,7,8 - discuss what is due for packet. Then gravity.
gravity-
http://www.sciencekids.co.nz/videos/physics/gravity.html
gravity slide show
http://www.slideshare.net/MMoiraWhitehouse/gravity-for-elementary-and-middle-students 
Calculate your weight on the planets- periods 5,7,8
Take your weight and multiply it by the following-
Mercury by 0.4, Venus by 0.9,  the Moon by 0.17, Mars by 0.4, Jupiter by 2.5, Saturn by 1.1, Uranus by 0.8, Neptune by 1.2
MOON- feather and hammer
http://www.youtube.com/watch?v=7eTw35ZD1Ig
http://www.youtube.com/watch?v=5C5_dOEyAfk

gravity of planets simulator:
http://lasp.colorado.edu/education/outerplanets/orbit_simulator/
your weight on other planets
http://www.exploratorium.edu/ronh/weight/



Wednesday- escape velocity lab


Thursday- watch:http://www.youtube.com/watch?v=T0xaCYo2d6Q
1. Finish questions on lab.
2. Discuss graph.
3. Observe what happens to orbital velocity when a planet gets closer to the Sun.
http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::800::600::/sites/dl/free/007299181x/78778/Orbital_Nav.swf::Orbital%20Velocity%20Interactive

4.APP-


Gravity Lab - FREE - Gravity Lab is a gravity simulator for iPad. It allows you to create dozens of particles with different masses and different initial velocities by simply tapping the screen or drawing a velocity vector. The positions and velocities of all the particles are recalculated in real time. According to Newton's law of universal gravitation, every massive body in the universe influences every other massive body, and it works exactly the same in Gravity Lab. You can toggle a switch to show the acceleration vectors of the bodies, which are proportional to the forces between the bodies and inversely proportional to their masses.
Gravity lab is a perfect aid for anyone seeking a deeper understanding of physics, or just willing to play around with their own simulated universe.

Gravity Lab includes a short 4-page guide explaining the Newton's law of universal gravitation, the first two of the three Kepler's laws of planetary motion and the concept of gravity assist in spaceflight. All these concepts can be demonstrated using Gravity Lab.

What you can do:
- create your own solar system
- demonstrate complex interaction patterns of multiple massive bodies
- collide massive bodies and demonstrate the conservation of momentum
- display vectors of acceleration due to gravitational forces and observe the acceleration of orbiting bodies
- observe first two of the three Kepler's laws of planetary motion
- demonstrate gravitational slingshot (gravity assist) for increasing the spacecraft's velocity
- observe effects of changing gravitational constant on the gravitational field using "Gravity well" mesh type


http://www.williamsclass.com/EighthScienceWork/Gravity.htm

 Gravity NASA eclips
http://www.nasa.gov/audience/foreducators/nasaeclips/search.html?terms=%22Our%20World%3A%20Gravity%20in%20Space%22&category=0000&disp=grid

moon gravity:
http://btc.montana.edu/ceres/html/Weight/weight1.htm#exploration


Friday- Video: http://www.youtube.com/watch?v=GJ_2Kb_pGIg


Notes:
Gravity- The force of attraction between objects due to their mass.
Mass- The amount of matter in an object.
Weight- Is the measure of the gravitational force on an object. 
Law of Universal Gravitation
1. The gravitational force increases as the mass of the objects increases.
2. The gravitational force decreases as the distance between the objects increases.
Rotate- to spin on axis = to one day
revolve-orbit- to go around a star or planet ( = to a year)
eccentricity- the measure of how round or elongated an ellipse is.
ellipse= oval
circumference-

diameter-
 Monday- Elliptical orbits-
eccentricity of Moon, earth orbits
http://kaffee.50webs.com/Science/activities/Astro/Activity-Ellipses.Orbits.htm
http://www.mathopenref.com/ellipseeccentricity.html