Outdoor Survival Challenge

I really enjoyed doing this challenge today. I liked it because it not only taught us how to use our resources, but it also taught us about teamwork. It was cool how we actually got to cut down tree branches and collect water from the river. It almost felt as if we were doing a real life minecraft game. I really hope we doing something similar to this in the future.

Bio-ethics is a set of rules that guides the behavior of those working in bio-related fields.

A)

True

 

B)

False

Points: 1 out of 1

Question 12 of 40

The superstructure of a building is usually below ground level.

A)

True

 

B)

False

Points: 1 out of 1

Question 13 of 40

During brainstorming, each solution must be carefully evaluated.

A)

True

 

B)

False

Points: 1 out of 1

Question 14 of 40

The problem-solving process and the scientific method are completely different from each other.

A)

True

 

B)

False

Points: 1 out of 1

Question 15 of 40

Carrying your books to school would not be considered a form of transportation.

A)

True

 

B)

False

Points: 1 out of 1

Question 16 of 40

Distribution pipelines are the main long-distance lines that transport the cargo.

 A)

True

 

B)

False

Points: 1 out of 1

Question 17 of 40

Farming is a type of biotechnology.

A)

True

 

B)

False

Points: 1 out of 1

Question 18 of 40

The schedule must allow time for things like bad weather.

A)

True

 

B)

False

Points: 1 out of 1

Question 19 of 40

The level of quality must be set before production actually begins.

A)

True

 

B)

False

Points: 1 out of 1

Question 20 of 40

When roughing in utilities, the ductwork for HVAC is usually installed first.

A)

True

 

B)

False

Question 21 of 40

Iron ore is one type of industrial material.

A)

True

 

B)

False

Points: 0 out of 1

Question 22 of 40

If a building is to have a basement, the foundation walls will become the building's basement walls.

A)

True

 

B)

False

Points: 1 out of 1

Question 23 of 40

Most automobiles are powered by reciprocating, four-stroke cycle internal-combustion engines.

A)

True

 

B)

False

Points: 1 out of 1

Question 24 of 40

Break bulk cargo is loose cargo, such as sand and gravel.

A)

True

 

B)

False

Points: 1 out of 1

Question 25 of 40

Space shuttles can be called the first true space ships.

A)

True

 

B)

False

Points: 1 out of 1

Question 26 of 40

All electric devices emit electromagnetic radiation.

 

A)

True

B)

False

Points: 1 out of 1

Question 27 of 40

Cofferdams are temporary structures.

A)

True

 

B)

False

Points: 1 out of 1

Question 28 of 40

Things done to actually cause the movement of passengers and cargo are called en-route services.

A)

True

 

B)

False

Points: 1 out of 1

Question 29 of 40

The purpose of simulation is to "work the bugs out" of a solution before it is put into effect.

 

A)

True

B)

False

Points: 1 out of 1

Question 30 of 40

The output of a system may also include pollution.

A)

True

 

B)

False

Midterm Study Guide

   Questions

Advantages of Pneumatics over Hydraulics– (write/type the 5 key things from the flashcards here)

Any equipment employing pneumatics uses an ________ set of components: a pneumatic circuit consisting of active components such as gas compressor, transition lines, air tanks, hoses, open atmosphere, and passive components.

Interconnecting

Hydraulics present certain advantages over pneumatics, but in a given application, pneumatic powered equipment is more suitable, particularly in industries where the factory units are plumbed for _____________ air.

compressed

In order to affect ______ motion, pneumatics employs compression of gases, based on the working principles of fluid dynamics in the concept of pressure.

Mechanical

Hydraulics means use of __________ fluids to execute a mechanical task.

Pressurized

Commonly seen _________ based equipment types are hydraulic presses, hydraulic hoppers, hydraulic cylinders, and hydraulic rams.

hydraulics

2.       Chapter 18 -  (write/type 3 key things from the flashcards here)

Which technologies apply the concepts of Newton's third law?

jet airplanes, fireworks, and recoil gun

What is Newton's Third Law? Use it to explain how a rocket engine propels a spacecraft into outer space.

Every action has an equal and opposite reaction. Thrusters will propel the spacecraft into outer space by pushing hot gases out a very high velocity. According to Newton's third law, the spacecraft will experience an equal and opposite force, propelling it upward into space. Also, acceleration of the games times their mass equals the acceleration of the rocket times its mass.

What is meant by the term "resistance"?

Resistance opposes forward movement.

3.       Chapter 19 -  (write/type 5 key things from the flashcards here)

Other engineers have tackled the problem of making more efficient cars. What are some new car technologies in development today that are designed to reduce the use of fossil fuels?

Hybrid vehicles have both gas engines, and electric motors and batteries, so they can use both energy sources, either one at a time or together. Hybrid vehicles capture energy from braking to generate electricity and charge the batteries. Solar - powered vehicles use photovoltaic (solar) cells; hydrogen-powered vehicles are reenergized with hydrogen gas, or are powered by fuel cells.

Give both an advantage and a disadvantage of a diesel engine over a gasoline engine.

Diesel engines are more powerful, and therefore are used to power trains, cargo ships, and other heavy vehicles. Diesel engine exhaust contains more soot and other particulate pollutants than gasoline engines

What is the difference between a gas engine and diesel engine?

The main difference between the two types of engines is in the way that they ignite the gas-air mixture. Gasoline engines take in a mixture of gas and air, compress it, and then ignite it with a spark plug. Diesel engines take in just air, compress it, and then inject fuel into the compressed air. The air is compressed enough to raise its temperature sufficiently so that the injected fuel will ignite it.

What information would you need to know to determine the force with which the piston pushes the air during the second step of the diesel cycle?

P=F/A, therefore F= A x P. You would need to determine the pressure in the chamber and the surface area of the piston.

What is the relationship between volume, temperature, and pressure that is useful for designing engines?

Volume, temperature, and pressure are related by the equation "Pressure (P) is proportional to the temperature (T) of the gas, divided by the volume (V) of the chamber.

4.       

      Inside the Teenage Brain – (write 3 key facts)

What is one of the enduring lessons for parents in the video?

Even though the public perception is about building bigger and better brains, what the research shows is that it's the relationships, it's the connections, it's the people in children's lives who make the biggest difference."

What effect do sleep debts have on the brain?

Some say these sleep debts can have a powerful effect on a teen's ability to learn and retain new material -- especially abstract concepts like physics, math, and calculus.

How does lack of sleep affect the teenage brain?

Sleep affects memory and learning

5.       

       Chapter 20 (write/type 5 key things from the flashcards here)

Why is the Stirling engine considered a closed system?

Because the working fluid remains inside the engine. Only energy crosses the system boundary.

What were the design requirements for the wheelchair engine? Why did the Stirling engine seem like it might meet the criteria?

The engine had to be quiet and had to deliver a lot of power. Because the Stirling engine is an external combustion engine, there are no explosions inside of the combustion chamber. Therefore, the engine is very quiet.

In a Stirling engine, the working gas never leaves the engine. How is this different than a combustion engine?

A combustion engine is an open pneumatic system - air and fuel vapor enter the chamber on every cycle, are burnt, then are forced out into the open air.

Why is the Stirling engine considered a closed system?

Because the working fluid remains inside the engine. Only energy crosses the system boundary.

What were the design requirements for the wheelchair engine? Why did the Stirling engine seem like it might meet the criteria?

The engine had to be quiet and had to deliver a lot of power. Because the Stirling engine is an external combustion engine, there are no explosions inside of the combustion chamber. Therefore, the engine is very quiet.

Putt Putt Boat Reflection

I had a fun time building the putt putt boat. I like the fact that we got to household materials for this project. Even though it did not turn out perfect I think we did a really good job building the boat. The only thing I did not like about this project is that the directions weren't very clear on certain steps.

New Year's Resolution

My New Year's Resolution for this class is to maintain the same grades that I made last semester. I also plan to complete my homework assignments that the day that it is given so I can focus on other classes. My last resolution is to do better on homework quizzes.

GA college 411

This website is perfect for helping someone plan their future. This website allows you to plan your high school, college, and career goals which is perfect for a middle or high school student. Ga college 411 has various tools to plan your career such as surveys. These surveys help you learn about careers, colleges, and about yourself.

Vocab Poster