civil war science and tech

We have discussed several aspects of science and technology in the Civil War era.  How has your perception of the technology changed? Was there anything you found surprising in learning about technology during the Civil War. 

transportation in the civil war era

What was transportation technology like during the year of the Civil War?

Civil War Techonoloqy

What communication technology did Lincoln use during the Civil War ?

Science and Technology American Civil War

How was science and technology different during the U.S. Civil war 1861 to 1865  compared to today? 




Consider the following areas in your discussion 


Communication 


Transportation 


Medicine 


Please discuss with at least three other people in the class. 
Write some examples on the white board. 

Buoyant Force vs. Gravity

Can Buoyant force be greater than the the force of Gravity? 

How could we prove it ? 

What are some examples of buoyant force overcoming gravity? 

Please Discuss with three other students in the classroom.

Hydraulic System

What is an hydraulic system and where would you find one in everyday life 


Discuss with someone near you. 


Hint page 83 

Bernoulli's Principle

What is Bernoulli's Principle ? 


Hint : Page 85 Motion Forces and Energy 


Please find out what it is and discuss with someone 
near you.  Try to restate it in your own words. 

Pascals Principle

What is Pascals Principle, and where do we see it in daily life? 

Buoyant Forces

 1. Does the buoyant force on a submerged object depend on the weight of the object?
Explain your answer.


2. Explain what the term density means

3. An object that weighs 340 N is floating on a lake. What is the buoyant force on it?  What is the weight of the displaced water? 


Please restate the question, use complete sentences, and your own words. 


Warning : This is  a Graded Assignment !!

To make something float

What does it take to make something float. How important do you think material is versus shape?


Try this link :
Will it float

Submarine

A submarine  changes its mass by adding or removing seawater from tanks inside the sub. Explain how this enable the sub to dive or rise to the surface


Hunley Info

Archimedes

Using Archimedes' Principle explain why a rowboat will float. If the boat fills with water, explain why it will sink. 

Float

When does the buoyant force act on an object ?


Hint page 75 of Motions, Forces,and Energy 

Pressure and Fluids

1. Explain how fluids exert pressure.


2. How  does air pressure change as you move farther away from the surface of the Earth? Explain why it changes

3. Why aren't deep sea fish crushed by the tremendous pressure of the water above them ?

4. Why do you think an astronaut must wear a pressurized suit in space?

WARNING THIS BLOG IS A GRADED ASSIGNMENT 

Atmospheric Pressure

A ballon is partially inflated and then carried up a high mountain. Will the ballon expand, shrink, or remain the same? Explain.

Click Here for more info on the balloon in pic.

Fluid

What are some facts you know about the properties of fluid. 


As depth of fluid changes, how does the pressure change? 

Pressure

What is pressure and give an example of an item that exerts pressure.

simulation

Friction

What do you think of when you here the word friction ? 


What factors determine the strength of the friction force when two surfaces slide against each other ? 

hint

or 

Game

Physics, Rockets, and Satellites

Please answer the following questions in complete sentences. 


1. Use  action-reaction forces to explain why a rocket can lift off the ground


2. Why doesn't an orbiting satellite fall back to Earth? 


3. Is it correct to say that satellites stay in orbit rather than falling to Earth because the are beyond the pull of Earth's gravity? Explain

Warning this Blog is a Graded Assignment !!!!!!
hint

What are the action and reaction forces when a hammer hits a nail? 

Traveling in a space ship away from the earth,  how would your weight change as you moved farther from Earth 

Hard Science

May 1 more momentum

When a wrecking ball hits a wall, it is not moving fast.  How can it have enough momentum to knock down a wall? 

PLAY