U3-Gravity

=__U3: Gravity and Motion__=


 * Think-Pair-Share Inquiry Questions:**
 * 1) What are the three laws of motion?
 * 2) What is gravity? How would you describe gravity?
 * 3) What are the properties of gravity? What does it affect and how does it affect these things?
 * 4) What is meant by zero-gravity or zero-G?
 * 5) What do you think is meant by hypergravity and microgravity?
 * 6) What is the difference between weight and mass?
 * 7) What does it mean to be in orbit?
 * 8) How do you think the human body reacts to short-term & long-term exposure to zero-G environments?

Useful simulations:
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=Historical Perspectives, Essential Text Readings & Notes:= **Class lecture portion about Newton and his Law of Universal Gravitation found within.** **Wallace Notes for Unit 3 Gravity and Motion**

Historical Videos Parts 1 & 2 - Watch for HW 2/23/15
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 * Read the pages listed below from the Gravity and Motion Reading PDF file. **
 * IMPORTANT: right click on Adobe Icon and select "save target as" to download document to your computer.**

=**The Universe - Gravity Video**=


 * GRAVITY Web-quest! Note:** when you are in the web-quest you have to click and drag the variables around for the calculations and the grey and yellow data points for the graphs. __Do NOT print out any work - copy all tables/graphs/answers into your notebook NEATLY.__

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 * A review of classical mechanics and Isaac Newton:**

= Law of Gravity Formula Practice: Begin by watching the following videos on using Newton's Formula to calculate the force of gravity between two objects. After you watch, move on to Practice Sheet 1 (#1-3, #6-8), where you will read the intro page and then attempt the practice problems in your notebook. Check your answers, then move on to practice sheet 2 (#1-4). Remember to: = = 1. Identify the formula by writing it out for each problem with the appropriate variables = = 2. Identify the variables by making a list and writing what the quantity is for each variable (G is always 6.67e-11, but M, m and r will change). Include units! = = 3. Substitute the quantities for the variables and solve. Include units on every value except for G throughout the problem. = = I should see 3 steps clearly laid out in your notebooks for every problem that you are calculating FG. = media type="youtube" key="SN1Q5ru2fI0" height="315" width="560"media type="youtube" key="apPOyaQdbZc" width="420" height="315"

#1-3, 6-8

#1-4







All problems

Copy problems and show all work in notebooks!

HOMEWORK: Read the article about the Human Body in space found at the link below, and summarize or create a diagram in your notebook that describes how the human body responds to long durations in Zero G environments. There is a short video for extension, please watch.

Human Body in Zero G Article
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**Further Practice/Investigation:**
WebQuest! (Click on Student Version - Gravity Simulation) [] More Practice with Gravity [|Further Practice with Gravity] Black Hole Exploration Web Quest Gravity Ghost Game (Release Date Coming Soon)

=**For Further Consideration:**=

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Great Video of Sunny Williams giving a tour of the International Space Station in Zero G!!
@http://www.wimp.com/orbitaltour/ ===

__Vocab:__===
 * Mass
 * Matter
 * Weight
 * Force of Gravity
 * Distance
 * Center of gravity
 * acceleration
 * directly proportional
 * inversely proportional
 * acceleration due to gravity
 * G
 * M
 * m
 * r
 * F sub G
 * Inertia
 * Orbit
 * Ellipse
 * Inverse square law
 * Universal Law of Gravity
 * Law of inertia
 * Law of acceleration
 * Action/Reaction Law
 * Radius