Friday, October 18, 2013

Week of October 21, 2013

google gravity- http://www.mrdoob.com/projects/chromeexperiments/google-gravity/

Just the opposite- google space
http://www.mrdoob.com/projects/chromeexperiments/google-space/

Curious about G forces? 
http://www.pbs.org/wgbh/nova/space/gravity-forces.html

We have to do this!!!!
http://www.google.com/doodle4google/ 


Monday-
http://www.google.com/doodle4google/
1.-Discuss Friday's video
2.-Review gravity  notes...


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-

3.
Topic review: (text)
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

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


Tuesday- Worksheet Review
http://idahoptv.org/dialogue4kids/season12/gravity/facts.cfm
Two forces work to keep the planets and their moons in orbit around the other object
 Why do planets orbit the Sun? http://curious.astro.cornell.edu/question.php?number=481
Go here.  http://hypertextbook.com/facts/JianHuang.shtml     -explain terminal velocity.

FINISH FOR HOMEWORK.

Wednesday-
1. Correct yesterday's questions.
2.Notability assignment- http://science.howstuffworks.com/satellite3.htm
PAGES 2,3 first half of 4!
Finish for homework.

Time to get to the truth...
http://www.mathsisfun.com/measure/weight-mass.html

then terms for lab report.

Thursday-
Elliptical orbits-
eccentricity of Moon, earth orbits
http://www.mathopenref.com/ellipseeccentricity.html


Friday-
1. Go over/finish lab questions
http://www.windows2universe.org/physical_science/physics/mechanics/orbit/eccentricity.html&edu=mid
2. Quiz over gravity.

Brainpop-
http://www.brainpop.com/science/motionsforcesandtime/gravity/

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