Review Common Assessment 2

According to the second law of thermodynamics, what effect does this have on entropy and energy transformations when a predator consumes prey in an ecosystem?

• Entropy decreases while energy quality remains constant

• Entropy decreases as energy is conserved and transferred efficiently.

• Entropy increases due to the loss of energy as heat during energy transformations

• Energy quality and entropy both go back and forth.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A population of 120 fish is growing at a rate of 20%. The change in population size divided by the change in time (dN/dt) is 24 fish per year. What is the final population size after one year?

• 125 fish

• 96 fish

• 140 fish

• 144 fish

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

In a desert, the sun heats the sand. When a desert tortoise rests on the warm sand, it absorbs the heat through its shell, warming its body. Which type of heat flow is warming the shell?

• radiation

• conduction

• freezing

• convection

Tags

NGSS.MS-PS1-4

This graph is an example of growth.

• logistic

• exponential

When plants perform photosynthesis, what form of energy does it start as and what form of energy does it turn into?

• It starts as radiation (heat and light) and turns into chemical energy.

• It starts as chemical energy and ends as sound energ

• t starts at chemical energy and turns into light energy.

• It starts as kinetic energy and ends as chemical energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

This graph is an example of growth.

• Exponential

• Logistic

When you are roasting marshmallows over a campfire, which type of heat flow is the biggest reason that your marshmallow burns?

• conduction

• radiation

• freezing

• entropy

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

At the beginning of 2023, farmer Bill had 100 cows. During the year, 52 of his female cows gave birth. Due to a spread of infectious worms 23 cows died. Does farmer Bill’s cow population have a positive or negative growth rate for 2023?

• Stays the same

• Positive

• Negative

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the carrying capacity for this population of bacteria?

• 1000

• 250

• There is no carrying capacity

• 500

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A population of 221 wolves live in a forest ecosystem that can support 250 wolves. If the population of wolves grows to 245 in one year. If I were to ask you to solve for the growth rate, what would you do for your first step?

• Find the change in population growth over the change in time by subtracting the starting population from the ending population

• Find the final population size by adding the starting population and the carrying capacity together

• Find the growth rate by dividing the starting population by the ending population

• Find the carrying capacity by reading a graph