Chapter 2.3

Question 1

What is Energy (CTDW or HT)?

Answer 1

Capacity to Do Work OR Heat Transfer

Question 2

What types of energy are there? (KSHT ER)?

Answer 2

Kinetic
Stored
Heat or Transfer
Electromagnetic Radiation

Question 3

What are two examples of potential energy (DR)

Answer 3

Dam holding water

Rock held in your hand (potential to be used)

Question 4

How can potential energy be turned to kinetic energy? (WFTD)

Answer 4

Water flows through dam (moves)

Question 5

What is Electromagnetic Radiation ? (ETW)

Answer 5

Energy that travels in waves

Question 6

Explain how energy varies in quality (SHL)

Answer 6

Some energy is more useful that others and energy can be high quality concentrated energy or low quality which is widely dispersed in a cool temp

Question 7

What is the first law of thermodynamics?

BM

Answer 7

When energy is changed from physical to chemical, no energy is created or destroyed.

We cannot get more out of a physical or chemistry than we put in.

Energy must be balanced and you cannot get more out of it.

Question 8

What is the 2nd law of thermodynamics? (EHL)

Answer 8

Energy goes from high to low quality.

Question 9

What is a System? (SCFIRW)

Answer 9

Set of components that function in a regular way

Question 10

What are examples of a system? (CHFECE)

Answer 10

Cell
Human Body
Forest
Economy
Car
Earth

Question 11

What are the three ingredients to a system? (IFTO)

Answer 11

Inputs
Flow or Throughput
Outputs

Question 12

What makes a system unsustainable? (WA)

Answer 12

When throughputs use more inputs than can be used.

And outputs are absorbed and diluted

Question 13

What is a positive feedback loop? (GF)

Answer 13

It makes the system go forward.

Question 14

What is a negative feedback loop? (T or AR)

Answer 14

Think of a thermometer that can go down.

Think of Aluminum being recycled.