Law of Conservation of Energy

What is the Law of Conservation?

• Matter and energy can neither be created nor destroyed

• Matter and energy can only be destroyed

• Matter and energy can only be created

• Matter and energy can be created and destroyed

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-4

NGSS.HS-PS3-1

What is the surroundings of a system?

• The input of the system

• The output of the system

• Everything beyond the box

• The box itself

What does steady-state mean for a system?

• The system is at a standstill

• The input and output remain constant

• The system is constantly changing

• The system is not functioning properly

What does conversion rate describe in a system?

• How much of the final product was obtained from the initial input

• How much of the initial input was used in the process

• How much of the final product was wasted

• How much of the initial input was left over

What does accumulation refer to in a system?

• The amount of mass coming in and out of the system

• The leftover or waste from the process

• The variables at the input and output

• The differences between input and output

Tags

NGSS.HS-LS2-4

NGSS.HS-LS2-5

What is the purpose of a recycling system in a process?

• To generate more raw materials

• To increase the yield of the final product

• To sort out any leftovers and run them back into the process

• To filter out contaminants

Tags

NGSS.HS-LS2-7

What is the role of a purge system in a process?

• To decrease the yield of the final product

• To generate more raw materials

• To filter out contaminants

• To increase the conversion rate

What does generation and consumption help engineers keep track of in a system?

• The amount of mass coming in and out of the system

• The leftover or waste from the process

• The accumulation of molecules inside the system

• The differences between input and output

Tags

NGSS.HS-PS1-7

What does accumulation in terms of molecules help engineers calculate in a system?

• The amount of mass coming in and out of the system

• The accumulation of molecules inside the system

• The differences between input and output

• The leftover or waste from the process

Tags

NGSS.HS-PS1-7

What is the main goal of engineers when improving a system?

• To generate more raw materials

• To make the process better and more efficient

• To decrease the yield of the final product

• To increase the amount of waste in the process

Tags

NGSS.HS-ESS3-2

NGSS.HS-ETS1-3